January Weather in Grant Park, United States

Last updated: February 24, 2025

In Grant Park, United States, January weather presents a fascinating contrast, with temperature fluctuations that can be quite extreme. The maximum reaches a pleasant 17°C (63°F) while the average temperature hovers around a chilly -3°C (27°F). Meanwhile, temperatures can plummet to a bone-numbing minimum of -30°C (-22°F). Despite this stark cold, January sees 69 mm (2.7 in) of precipitation over approximately 8 days, resulting in humidity levels that average at a high 82%. This combination of factors creates a uniquely crisp and often dramatic winter atmosphere, making it a month of diverse weather experiences for visitors and residents alike.

January Temperature in Grant Park

In Grant Park, United States, January temperatures can be quite a challenge, with a chilling minimum of -30°C (-22°F) that starkly contrasts a moderate maximum of 17°C (63°F). The month averages around -3°C (27°F), setting the stage for a cold winter. As February rolls in, temperatures dip slightly lower, with a minimum of -31°C (-24°F), but the average nudges upward to -2°C (29°F), hinting at the approaching spring. This upward trend continues through March, where averages rise to around 5°C (41°F), and maximums can soar to 26°C (80°F). The gradual warming reveals a transition from the grips of winter to a more temperate climate, marking the start of a dramatic seasonal shift that offers a respite from the harsh cold of the early year.

January Weather in Grant Park: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Grant Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec272940506273767368554034
Data source: Temperature data for Grant Park generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Grant Park

In January, Grant Park experiences moderate precipitation with a total of 69 mm (2.7 in) spread across approximately 8 days. This marks a slight decrease compared to the following month, February, which sees an uptick to 71 mm (2.8 in) over 10 days. As winter transitions into spring, precipitation increases notably in March and April, peaking at 120 mm (4.7 in) in April with about 13 rainy days. The pattern of gradual increase continues into May, where rainfall reaches its annual high at 161 mm (6.3 in). Following this peak, the summer months witness a decline in both precipitation amounts and rainy days, emphasizing a seasonal shift as the year progresses. This trend showcases the dynamic weather patterns characteristic of the region, illustrating how January’s modest rains set the stage for the wetter months ahead.

January Precipitation Trends in Grant Park

The chart displays monthly precipitation patterns in Grant Park, with values for each month alongside January's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec6971951201611249892771356459
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Grant Park

In January, Grant Park experiences a humidity level of 82%, setting the stage for a damp winter season. As the months progress toward spring, humidity gradually increases, peaking at 85% in April. After this high, there is a slight dip in May, dropping to 79%, which marks the year’s lowest point. Interestingly, the humidity stabilizes around the low 80s throughout the summer months, suggesting a consistent moisture level. However, as autumn arrives, particularly in November with a peak of 88%, the air becomes noticeably more humid, leading into the cooler months of winter where the cycle begins anew. Overall, the trend in Grant Park's humidity showcases a gradual rise during early spring, stability in summer, and a notable increase heading into late fall.

January Average Humidity in Grant Park

This chart illustrates the average monthly humidity levels in Grant Park, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Grant Park

In January, Grant Park experiences a moderate UV Index of 3, prompting a burn time of about 30 minutes. This relatively gentle sun exposure contrasts sharply with the following months, as February sees a slight uptick to a UV Index of 5 while maintaining the same burn time. As spring approaches, March's UV Index rises to 6, indicating a shift towards high exposure with a recommended burn time reduced to 25 minutes. The transition into summer marks a significant change, with the UV Index peaking at 10 from May through July, requiring vigilant sun protection due to a short burn time of just 15 minutes. Interestingly, while August slightly falls to a UV Index of 9, the summer heat persists until September, where it inches down to 8. As the seasons shift, both October and November present a return to moderate exposures, though December concludes the year with a low UV Index of 2. For more details on UV trends throughout the year, explore Grant Park UV Index.

Maximum UV Index Levels in Grant Park for January

The chart shows the monthly maximum UV Index (UVI) for Grant Park in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Grant Park January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Grant Park

As the year begins in Grant Park, January graces the landscape with a modest 116 hours of sunshine, signaling the tail end of winter. However, as spring approaches, the days grow brighter, with February increasing to 172 hours. The trend takes a delightful leap in March and April, where sunshine hours ascend to 226 and 244 respectively, heralding the arrival of blooming flowers and vibrant greenery. May continues this upward trajectory with 284 hours, setting the stage for a sun-soaked summer. June through August showcases the peak of sunshine, reaching a sunny high of 353 hours in July, making it the sunniest month of the year. As fall descends, sunlit hours gradually reduce, stabilizing at 287 hours in September before tapering off through the autumn months, with November and December basking in 189 and 179 hours respectively. The comforting rhythm of sunshine throughout the year reflects the changing seasons and invites residents and visitors alike to embrace the beauty of nature in Grant Park.

Monthly Sunshine Duration in Grant Park: January Highlighted

The January sunshine duration represents the total number of hours Grant Park experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec116h172h226h244h284h329h353h334h287h223h189h179h
Data source: Grant Park January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Grant Park During January

In Grant Park, January greets visitors with a 25% chance of sunny weather, making it one of the less favorable months for sunshine compared to its neighbors. As winter gives way to spring, the likelihood of bright days gradually increases, with February seeing a slight uptick at 31%. The trend continues, peaking in the late summer and early fall months, where September boasts the highest chance of sunshine at 59%. This pattern suggests that while January may be somewhat gloomy, the promise of sunnier days is just around the corner as the seasons progress, offering hope and anticipation for brighter skies ahead.

Percentage of Sunny Days in January in Grant Park

The chart illustrates the percentage of sunny days in Grant Park throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Grant Park experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec25%31%45%40%33%42%43%45%59%33%46%38%
Data source: Grant Park January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Grant Park in January

In Grant Park, the daylight duration starts its annual journey at a modest 9 hours in January, inviting the crisp embrace of winter. As February unfolds, the days gradually lengthen, reaching 10 hours of light, hinting at the promise of spring. March further brightens the scene with 11 hours, while April bursts forth with 13 hours of vibrant sunshine, awakening the natural beauty surrounding the park. The trend peaks in June, when daylight stretches to an invigorating 15 hours, creating the perfect backdrop for summer activities. As July rolls in, the sun’s hold begins to wane slightly to 14 hours, followed by a gentle tapering to 13 hours in August. The gradual descent continues into September with 12 hours, and by October, we're back to 11 hours as autumn shades the landscape. November and December close the year once more with 9 hours of daylight, reminding us of the cyclical nature of time and light in this tranquil setting.

Average Daylight Hours in Grant Park for January

The chart illustrates the variation in daylight duration in Grant Park throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 34m10h 37m11h 58m13h 20m14h 30m15h 5m14h 46m13h 44m12h 24m11h 2m9h 50m9h 14m
Data source: Grant Park daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Grant Park

In Grant Park, January ushers in a gentle average wind speed of 3.8 m/s (9 mph), setting a calm yet crisp tone for the new year. As winter fades, February sees a subtle increase to 4.4 m/s (10 mph), followed by a slight rise to 4.6 m/s (10 mph) in March, which hints at the coming warmth of spring. However, as temperatures continue to rise, the winds begin to mellow, dropping to 3.6 m/s (8 mph) by May and reaching a low of 2.7 m/s (6 mph) in August. This seasonal dip in wind intensity is part of a natural ebb and flow, with speeds gradually rebounding in the fall. By November, winds pick up again at 4.2 m/s (9 mph), echoing the brisk conditions of January, before December closes the year on a breezy note with 4.3 m/s (10 mph). Overall, the wind patterns in Grant Park illustrate a dynamic dance between the seasons, from the invigorating chill of winter to the tranquil warmth of summer.

Average January Wind Speed in Grant Park

The chart displays monthly wind speed patterns in Grant Park, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.8 m/s4.44.64.03.63.43.02.73.83.64.24.3
Data source: Grant Park January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Grant Park Compares to Other Months

The weather in Grant Park changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Grant Park and find detailed weather information for every month.

In comparison to January, February experiences slightly colder minimum temperatures, with January averaging a minimum of -30°C (-22°F) compared to February's -31°C (-24°F). However, February sees a marginally warmer average temperature of -2°C (29°F), compared to January's average of -3°C (27°F). Additionally, February records higher maximum temperatures, reaching up to 21°C (70°F), whereas January peaks at 17°C (63°F). Precipitation levels are relatively similar, with February receiving 71 mm (2.8 in) over 10 days and January receiving 69 mm (2.7 in) over 8 days. Humidity levels are also comparable, with February having an 83% humidity level compared to January's 82%. For more specific details about the weather in this month, you can check out Grant Park weather in February.

January and March present a stark contrast in weather conditions. In January, temperatures can plunge to a minimum of -30°C (-22°F), with an average of -3°C (27°F) and a maximum of 17°C (63°F). The month sees about 69 mm (2.7 in) of precipitation over 8 days, with humidity levels sitting at 82%. In comparison, March experiences milder temperatures, starting with a minimum of -18°C (-1°F) and reaching an average of 5°C (41°F), with highs of 26°C (80°F). Precipitation increases to 95 mm (3.7 in) over 12 days, and humidity rises slightly to 84%. For more specific details about the weather in Grant Park during March, you can check out Grant Park weather in March.

In January, temperatures are significantly colder, with a minimum of -30°C (-22°F) and an average temperature of -3°C (27°F), while April sees a more moderate climate, with minimums around -7°C (19°F) and averages of 10°C (50°F). The maximum temperatures in January reach only up to 17°C (63°F), contrasting sharply with April's highs of up to 29°C (85°F). Precipitation also varies, with January experiencing 69 mm (2.7 in) over 8 days, while April delivers a higher total of 120 mm (4.7 in) spread across 13 days. Additionally, humidity remains relatively high in both months, at 82% in January and slightly higher at 85% in April. For more detailed insights, you can refer to Grant Park weather in April.

In January, the weather presents a stark contrast to that of May, with average temperatures hovering around -3°C (27°F), reaching as low as -30°C (-22°F) at times. Precipitation is relatively low for the month, with around 69 mm (2.7 in) falling over 8 days, and humidity levels are quite high at 82%. In comparison, May welcomes warmer temperatures, with an average of 17°C (62°F) and highs reaching up to 34°C (94°F). The month experiences more rainfall, totaling 161 mm (6.3 in) across 15 days, while humidity remains slightly lower at 79%. For a detailed look at specific conditions, you can refer to Grant Park weather in May.

In January, temperatures in Grant Park can plummet as low as -30°C (-22°F), with an average of -3°C (27°F) and highs reaching just 17°C (63°F). The month experiences significant winter precipitation at 69 mm (2.7 in) over about 8 days, with high humidity levels lingering around 82%. In contrast, June showcases a dramatic shift in climate, with minimum temperatures around 10°C (51°F) and average highs of 23°C (73°F), occasionally soaring to a sweltering 35°C (95°F). The month sees an increase in overall precipitation to 124 mm (4.9 in) over approximately 13 days, while humidity remains consistent at 82%. For more details, check out Grant Park weather in June.

January and July present starkly contrasting weather conditions. In January, temperatures dip dramatically, with minimums plunging to -30°C (-22°F) and an average around -3°C (27°F), while the maximum reaches a chilly 17°C (63°F). The month experiences 69 mm (2.7 in) of precipitation over about 8 days, with humidity levels at a relatively high 82%. In contrast, July boasts much warmer temperatures, with minimums around 13°C (56°F) and averages peaking at 24°C (76°F), as maximums soar to a sweltering 34°C (94°F). Characterized by slightly higher precipitation of 98 mm (3.9 in) over 12 days, the humidity remains comparable at 80%. For more specifics on summer conditions, you can check out Grant Park weather in July.

In January, the weather is characterized by frigid temperatures, ranging from a chilling minimum of -30°C (-22°F) to an average of -3°C (27°F), with occasional highs reaching 17°C (63°F). This month sees about 69 mm (2.7 inches) of precipitation over approximately 8 days, coupled with high humidity at 82%. In contrast, August offers a much warmer climate, with temperatures varying from a comfortable minimum of 11°C (52°F) to a lively average of 23°C (74°F) and peaks of up to 35°C (95°F). Rainfall increases slightly to 92 mm (3.6 inches) over about 11 days, maintaining a humidity level at 81%. For more detailed information on August weather, check Grant Park weather in August.

The comparison between January and September weather reveals stark contrasts. In January, temperatures can plummet to a chilling minimum of -30°C (-22°F), with an average temperature around -3°C (27°F), while September enjoys much milder conditions, with minimums of 5°C (41°F) and an average of 20°C (69°F). The maximum temperature in January reaches only 17°C (63°F), but September can soar up to 34°C (94°F). Precipitation levels are similar in both months, with January receiving 69 mm (2.7 in) and September slightly higher at 77 mm (3.0 in), although both see precipitation on about 8 days. Humidity is fairly consistent, with January at 82% and September slightly lower at 80%. For more details on September weather, you can check Grant Park weather in September.

In January, temperatures in Grant Park can plummet to a chilling minimum of -30°C (-22°F), with an average temperature of -3°C (27°F) and a maximum reaching only 17°C (63°F). The month is marked by relatively low precipitation, measuring 69 mm (2.7 in) over about 8 days, while humidity hangs around 82%. In contrast, October experiences a more temperate climate, where the minimum temperature is a chilly -3°C (28°F), and averages around 13°C (56°F), peaking at a warm 31°C (89°F). Precipitation increases to 135 mm (5.3 in) over approximately 13 days, yet humidity remains steady at 82%. For a deeper look into the specifics of October weather, you can explore Grant Park weather in October.

In January, temperatures can plunge to as low as -30°C (-22°F), with an average temperature around -3°C (27°F) and occasional highs reaching 17°C (63°F). The month sees about 69 mm (2.7 in) of precipitation spread over 8 days, accompanied by relatively high humidity at 82%. In contrast, November experiences milder conditions, with temperatures ranging from a minimum of -13°C (9°F) to an average of 4°C (40°F), and maximums climbing up to 25°C (78°F). Precipitation is slightly lower at 64 mm (2.5 in) over the same number of days, and humidity is a bit higher at 88%. For more about the specific weather conditions in November, you can visit Grant Park weather in November.

In January, temperatures in Grant Park typically range from a frigid minimum of -30°C (-22°F) to a mild maximum of 17°C (63°F), resulting in an average temperature of -3°C (27°F). In contrast, December sees slightly warmer conditions, with minimum temperatures around -20°C (-5°F) and maximums reaching 18°C (65°F), making the average temperature a more moderate 1°C (34°F). While both months experience similar levels of precipitation, with January receiving 69 mm (2.7 in) over 8 days and December having 59 mm (2.3 in) across 7 days, January's overall humidity is slightly lower at 82% compared to December's 84%. For a detailed look at December's weather in Grant Park, check out Grant Park weather in December.

Compare Grant Park's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Grant Park

January in Grant Park presents a stark contrast to the milder months, with temperatures dipping to their lowest, skirting the edge of freezing and even plunging into negative territory. The chill is accompanied by high humidity, creating a biting cold that makes this month feel particularly brisk. Precipitation is moderate yet frequent, with several days of rain or snow, adding a layer of unpredictability to the winter landscape. For those seeking to understand the full scope of Grant Park's climate variations, you'll find detailed insights at Grant Park Climate. As residents bundle up and savor the serene winter scenery, January truly encapsulates the essence of a Midwestern winter.