January Weather in Tucson, United States

Last updated: February 24, 2025

January in Tucson, United States, presents a varied climate that captures the essence of winter in the desert. With maximum temperatures reaching a comfortable 25°C (77°F) and an average of 11°C (53°F), the weather invites outdoor activities amidst the stunning landscapes. However, nights can get chilly, dropping to a brisk -1°C (30°F), reminding residents to bundle up. Precipitation is minimal, with only 23 mm (0.9 in) recorded over a mere 3 days, allowing for plenty of sunny intervals despite the 76% humidity that lingers in the air. This delightful mix of temperatures and sporadic rain makes January an intriguing month for Tucson’s outdoor enthusiasts.

January Temperature in Tucson

In Tucson, Arizona, January offers a delightful respite from harsher winter conditions found elsewhere, with temperatures typically ranging from a chilly -1°C (30°F) at night to a pleasant 25°C (77°F) during the day. The average temperature hovers around 11°C (53°F), making it a comfortable time for outdoor activities. As the months progress into February and March, a gradual warming trend becomes evident, with February showing slightly cooler nights and March introducing higher daytime temperatures peaking at 33°C (92°F). This shift hints at the impending warmth of spring, where April further elevates the averages, with max temperatures escalating into the 30s°C. Tucson's January climate thus stands out as a refreshing blend of cool nights and mild, sunny days, setting the stage for a gentle transition into its warmer months.

January Weather in Tucson: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Tucson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525562717788888783736354
Data source: Temperature data for Tucson 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 Tucson

In Tucson, January ushers in a modest average precipitation of 23 mm (0.9 in), typically falling over just three days of the month. Compared to the wetter months that follow, such as July, which records a substantial 54 mm (2.1 in), January’s rainfall marks the beginning of a gradual increase that peaks in the summer monsoon season. Interestingly, while February sees a slight uptick with 34 mm (1.3 in), precipitation remains sporadic before tapering off dramatically in the spring and early summer months. This trend illustrates Tucson's distinct dry spells interspersed with short bursts of rainfall, setting the stage for the vibrant, rain-fed growth that characterizes its desert landscape later in the year.

January Precipitation Trends in Tucson

The chart displays monthly precipitation patterns in Tucson, 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.
JanFebMarAprMayJunJulAugSepOctNovDec233416238543527101427
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Tucson

In January, Tucson experiences a humidity level of 76%, setting the stage for a month characterized by a pleasantly moist atmosphere. This humidity begins to rise slightly into February, reaching 79% before gradually descending through the spring months, with 67% in March and dropping to 55% by April. As summer approaches, the desert climate brings a further decrease, with humidity falling to 40% in May and hitting a low of 33% in June. The trend of low humidity continues into July and August, with values around 34% and 48%, respectively, offering a stark contrast to the wetter winter months. As the year transitions to autumn, humidity begins to climb again, peaking at 82% in December. This cyclical pattern highlights Tucson's distinctive climate, where the dry heat of summer juxtaposes the more humid winter months, creating a unique seasonal rhythm.

January Average Humidity in Tucson

This chart illustrates the average monthly humidity levels in Tucson, 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.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Tucson

In Tucson, January brings a moderate UV Index of 5, with a recommended burn time of 30 minutes, making it the perfect month for outdoor activities while still being mindful of sun exposure. As the months progress, the UV Index steadily rises, peaking in the summer at an extreme 12 from May through July, when the burn time plummets to just 10 minutes. This trend showcases the significant shift from the milder winter sun to the intense summer rays, highlighting the importance of proper sun protection. As winter fades into early spring, the risk of sunburn markedly increases, jumping to 9 in March and reaching 11 in April. To stay informed about UV levels and ensure safe sun exposure year-round, check out the detailed information available at Tucson UV Index.

Maximum UV Index Levels in Tucson for January

The chart shows the monthly maximum UV Index (UVI) for Tucson 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.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121111864
Data source: Tucson 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 Tucson

In Tucson, January serves as a gentle introduction to the year, basking in a noteworthy 204 hours of sunshine. As winter transitions into spring, the city begins to warm up, leading to a rise in sun-drenched days; February sees an increase to 241 hours, hinting at the vibrant energy to come. By March, Tucson truly awakens, enjoying a remarkable 304 hours of sunlight, paving the way for the radiant months ahead. The trend continues upward through April and May, peaking at a stunning 371 hours of sunshine in both June and May, where the city basks in its brightest glory. However, as summer wanes and autumn approaches, the hours gradually taper off, showcasing the rhythmic ebb and flow of Tucson’s sunny disposition, with 312 hours in September and 300 hours in October. As the year winds down, November and December bring softer sunshine, with 261 hours and 243 hours, inviting a cozy close to the year in this sun-kissed desert oasis.

Monthly Sunshine Duration in Tucson: January Highlighted

The January sunshine duration represents the total number of hours Tucson 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.
JanFebMarAprMayJunJulAugSepOctNovDec204h241h304h333h371h371h354h340h312h300h261h243h
Data source: Tucson January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tucson During January

In Tucson, United States, January ushers in a 67% chance of sunny weather, setting a pleasant tone for the year ahead. This likelihood of sunshine trends upwards into February and March, peaking at 76% in both months, while April holds steady at the same rate. As spring approaches, the chances of clear skies remain favorable, with May boasting an impressive 88% likelihood of sunny days. However, as summer rolls in, the odds dip significantly, particularly in July, plunging to only 34%. Thankfully, a mild recovery occurs from late summer into fall, with October offering an encouraging 81% chance of sunshine. Overall, Tucson’s weather in January serves as a promising harbinger of the beautiful, sun-kissed days that are to follow in the upcoming months.

Percentage of Sunny Days in January in Tucson

The chart illustrates the percentage of sunny days in Tucson 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 Tucson experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec67%76%76%76%88%73%34%56%66%81%70%59%
Data source: Tucson January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tucson in January

In Tucson, United States, January heralds the return of longer days, starting with approximately 10 hours of daylight that gradually increases as winter wanes. This upward trend continues into February, offering 11 hours, before reaching a peak of 14 hours in the sun-soaked month of June. Following this zenith, daylight begins to recede, reflecting the seasonal cycle as July and August maintain 13 hours each. From September's 12 hours to the return of 10 hours in November and December, Tucson's daylight duration showcases a vibrant rhythm of light across the year, inviting residents and visitors alike to embrace both the brilliance of summer and the subtle beauty of winter’s twilight.

Average Daylight Hours in Tucson for January

The chart illustrates the variation in daylight duration in Tucson throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 17m11h 2m12h12h 59m13h 48m14h 12m13h 59m13h 15m12h 18m11h 20m10h 29m10h 3m
Data source: Tucson daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Tucson

In Tucson, January greets residents with a gentle breeze, as the average wind speed sits comfortably at 2.8 m/s (6 mph)—a figure that remains consistent into February. As winter transitions into spring, March ushers in a slight uptick, with winds picking up to 3.3 m/s (7 mph), a speed that persists through April and May. However, a gradual decline begins in the warmer months, culminating in lower wind speeds during the peak summer heat of July and August, where they dip to around 2.1 m/s (5 mph). This pattern of moderation and seasonal fluctuation continues into the fall, with a gentle recovery to 2.6 m/s in October, before the winds ease once again towards the year’s end. Overall, the January wind in Tucson embodies this rhythmic dance of nature, providing a refreshing yet mild atmosphere that perfectly complements the city’s winter ambiance.

Average January Wind Speed in Tucson

The chart displays monthly wind speed patterns in Tucson, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.8 m/s2.83.33.33.33.02.22.12.12.62.52.3
Data source: Tucson January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Tucson Compares to Other Months

The weather in Tucson 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 Tucson and find detailed weather information for every month.

January and February weather both display a range of temperatures, but February tends to be slightly cooler on the lower end while offering warmer highs. In January, the minimum temperature dips to around -1°C (30°F), with an average of 11°C (53°F) and a maximum of 25°C (77°F). In contrast, February sees minimum temperatures reaching -3°C (27°F), but the average increases to 13°C (55°F) and a higher maximum of 29°C (84°F). Additionally, February experiences more precipitation, totaling 34 mm (1.3 in) over approximately four days, compared to January's 23 mm (0.9 in) across three days. Humidity levels also rise slightly from 76% in January to 79% in February, suggesting a trend towards a more humid climate as winter progresses. For more details, check out Tucson weather in February.

In January, temperatures in Tucson range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 25°C (77°F), with an average of 11°C (53°F). The month sees about 23 mm (0.9 in) of precipitation over three days, accompanied by a higher humidity level of 76%. In contrast, March experiences milder temperatures with a minimum of 1°C (33°F) and a maximum of 33°C (92°F), averaging 16°C (62°F). Precipitation decreases slightly to 15 mm (0.6 in) over three days, and humidity drops to 67%. Overall, March offers warmer and drier conditions compared to January. For more details, check out Tucson weather in March.

January weather in Tucson is quite mild, with temperatures ranging from a chilly min of -1°C (30°F) to a warm max of 25°C (77°F) and an average of 11°C (53°F). The month sees a fair bit of humidity at 76% and experiences about 23 mm (0.9 in) of precipitation over three days. In contrast, April boasts much warmer conditions, with minimum temperatures rising to 6°C (43°F) and maximums soaring to 37°C (98°F), resulting in an average temperature of 22°C (71°F). This month is also notably drier, with only 2 mm (0.1 in) of precipitation and no recorded rainy days, while the humidity drops to a more comfortable 55%. For more details, check out Tucson weather in April.

In January, temperatures in Tucson range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 25°C (77°F), with an average temperature of 11°C (53°F). The month experiences higher humidity at 76% and receives about 23 mm (0.9 in) of precipitation over three days. In contrast, May showcases a significant rise in temperatures, with a minimum of 9°C (48°F) and a maximum soaring to 40°C (104°F), resulting in a much warmer average of 25°C (78°F). Additionally, May has lower humidity at 40% and minimal precipitation of just 3 mm (0.1 in) occurring over only one day. For a detailed look at the weather in May, you can check Tucson weather in May.

January and June present strikingly different weather conditions. In January, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant average of 11°C (53°F) and can peak at 25°C (77°F), accompanied by relatively high humidity at 76% and some precipitation over three days. In contrast, June offers a much warmer experience, with temperatures starting at a mild 17°C (62°F) and soaring to an average of 31°C (88°F), ultimately reaching highs of 44°C (111°F). The humidity drops significantly to 33%, and the month enjoys minimal precipitation, with no rainy days reported. For more detailed insights on the weather during this month, you can visit Tucson weather in June.

January and July showcase stark contrasts in weather. In January, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 25°C (77°F), with an average of 11°C (53°F). This month experiences light precipitation, with just 23 mm (0.9 in) over three rainy days and high humidity at 76%. In contrast, July brings much warmer conditions, with temperatures starting at a minimum of 20°C (69°F) and soaring to an impressive maximum of 43°C (110°F), averaging around 31°C (88°F). Precipitation increases to 54 mm (2.1 in) spread over ten days, but the humidity drops to a more comfortable 34%. For more detailed insights, you can check Tucson weather in July.

January in Tucson presents a cooler climate, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 25°C (77°F) and an average of 11°C (53°F). The month sees relatively low precipitation, with about 23 mm (0.9 in) falling over just three days, accompanied by higher humidity levels at 76%. In contrast, August brings significantly warmer weather, with temperatures ranging from a minimum of 20°C (69°F) to a scorching maximum of 42°C (108°F) and an average of 31°C (87°F). Precipitation is slightly higher at 35 mm (1.4 in), but this occurs over eight days, and the humidity drops to 48%. For a closer look at what to expect, you can check out Tucson weather in August.

In January, the weather is cooler with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 25°C (77°F), resulting in a mild average of 11°C (53°F). The month experiences modest precipitation of 23 mm (0.9 in) over three days, while the humidity is relatively high at 76%. In contrast, September brings significantly warmer temperatures, with a minimum of 13°C (56°F) and a maximum that can reach up to 41°C (106°F), averaging around 28°C (83°F). Although precipitation slightly increases to 27 mm (1.1 in) over the same three days, the humidity decreases to 64%, making for a drier feel. For a more detailed look at the weather patterns, you can check out Tucson weather in September.

In January, temperatures in Tucson typically range from a chilly minimum of -1°C (30°F) to a comfortable average of 11°C (53°F), peaking at 25°C (77°F). The month experiences about 23 mm (0.9 in) of precipitation over roughly 3 days, with humidity levels hovering around 76%. In contrast, October brings significantly warmer weather, with minimum temperatures starting at 4°C (39°F) and averaging 23°C (73°F), reaching highs of 38°C (100°F). October is much drier, with only 10 mm (0.4 in) of rain falling in about 2 days and lower humidity at 67%. To explore more about the weather in October, check out Tucson weather in October.

In January, temperatures in Tucson exhibit a broader range, with minimums dropping to -1°C (30°F) and maximums reaching up to 25°C (77°F), resulting in a comfortable average of 11°C (53°F). The month sees about 23 mm (0.9 inches) of precipitation over approximately three days, while humidity hovers at 76%. In contrast, November experiences milder temperatures, with minimums at 2°C (36°F) and maximums peaking at 33°C (91°F), leading to a higher average of 17°C (64°F). November is also drier, receiving only 14 mm (0.6 inches) of precipitation over just one day, and maintains a slightly higher humidity level at 77%. For more detailed information, visit Tucson weather in November.

In January, temperatures in Tucson range from a minimum of -1°C (30°F) to a maximum of 25°C (77°F), with an average of 11°C (53°F). The month experiences relatively light precipitation, totaling 23 mm (0.9 in) over just three days, and has a humidity level of 76%. In contrast, December sees slightly colder minimum temperatures at -2°C (29°F) but has a higher average of 12°C (54°F) and can reach up to 27°C (80°F). Precipitation is also a bit heavier in December at 27 mm (1.0 in) over four days, accompanied by higher humidity at 82%. For a more in-depth look at the weather patterns, check out Tucson weather in December.

Compare Tucson's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Tucson

January in Tucson presents a distinctive contrast to other months, as the mild temperatures and crisp air invite residents and visitors alike to enjoy the outdoors. With maximum temperatures peaking at a comfortable 25°C (77°F) and an average settling around 11°C (53°F), January offers a refreshing change from the heat that envelops the city in summer. Rainfall is minimal, with only a few days of precipitation, but the humidity still lingers, often reaching 76%. This makes January a unique and pleasant time to experience the beauty of Tucson's desert landscapes. For those interested in a deeper look at how the seasons shape this vibrant city, visit Tucson Climate.