January Weather in Julian, United States

Last updated: February 24, 2025

In January, the charming town of Julian, United States experiences a varied climate characterized by a maximum temperature of 25°C (78°F) and an average of 10°C (51°F). The month sees cooler nights with temperatures dipping to a minimum of -3°C (27°F). Rain is a frequent visitor, with a total precipitation amount of 45 mm (1.8 in) over the course of approximately 5 wet days, contributing to a humidity level of 72%. This unique combination of mild days and chilly nights creates a picturesque winter atmosphere, making it an inviting destination for those seeking a seasonal getaway.

January Temperature in Julian

In Julian, United States, January offers a brisk start to the year, with temperatures ranging from a chilly -3°C (27°F) at night to a mild 25°C (78°F) during the day. The average temperature hovers around 10°C (51°F), hinting at a gradual thaw from winter's grip. This month sets the stage for the transition into milder weather as February follows suit with similar lows and averages, while the maximum temperature remains within striking distance of January's highs. As the seasons progress towards spring, there’s a noticeable upward trend in temperatures, suggesting that Julian is poised to embrace a warm embrace as it moves from winter’s chill to the balmy days of summer.

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

The chart illustrates January temperature patterns in Julian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec515153606474808075665950
Data source: Temperature data for Julian 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 Julian

In January, Julian experiences a moderate amount of precipitation, totaling 45 mm (1.8 in) over 5 days, setting the stage for a wet winter. This amount is slightly less than February's 53 mm (2.1 in), indicating a trend of increasing moisture as the season progresses. Following January, precipitation tends to taper off significantly, with April and May seeing just 17 mm (0.7 in) and 11 mm (0.4 in), respectively. The significant decline continues into the summer months, where June records a mere 2 mm (0.1 in)—a stark contrast to the winter wetness. Overall, January marks one of the wetter months, laying a foundation for the drier conditions that characterize the later parts of the year, highlighting Julian's varied climate throughout the seasons.

January Precipitation Trends in Julian

The chart displays monthly precipitation patterns in Julian, 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.
JanFebMarAprMayJunJulAugSepOctNovDec45533717112181412102148
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Julian

In January in Julian, United States, humidity sits at a notable 72%, setting the stage for a winter characterized by relatively damp conditions. This month marks the beginning of a gradual decline as February experiences a slight uptick to 77%, likely due to seasonal transitions. As the weather warms up into March and April, humidity begins to decrease, reaching a comfortable 56% by April, showcasing the shift to spring. However, the driest months appear during the summer, with July and August dropping to a low of 42%, reflecting the region's arid period. As fall approaches, humidity begins to rebound, peaking again in December at 74%, illustrating a cyclical pattern where winter months tend to be more humid compared to the warmer summer months.

January Average Humidity in Julian

This chart illustrates the average monthly humidity levels in Julian, 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.
JanFebMarAprMayJunJulAugSepOctNovDec72%77%67%56%46%48%46%42%52%58%66%74%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Julian

In January, Julian, United States, experiences a moderate UV Index of 4, indicating a burn time of about 30 minutes for unprotected skin. This marks the beginning of a gradual upward trend in UV exposure, as the months progress into February with a jump to a high UV Index of 7. The intensity continues to rise significantly as spring approaches, peaking at an extreme UV Index of 12 in both May and June, where the burn time drops to just 10 minutes. This trend of increasing UV exposure highlights the importance of sun protection, especially in the summer months when the risk is at its highest. As temperatures cool in the fall and winter, the UV levels decrease again, returning to a moderate risk by December. To stay informed about the UV levels throughout the year, visit Julian UV Index.

Maximum UV Index Levels in Julian for January

The chart shows the monthly maximum UV Index (UVI) for Julian 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.
JanFebMarAprMayJunJulAugSepOctNovDec479111212121111854
Data source: Julian 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 Julian

In Julian, United States, the month of January greets residents and visitors with a cozy 194 hours of sunshine, setting the stage for a gradual rise in daylight as the year unfolds. As February rolls in, sunshine hours increase to 250, hinting at the promise of spring. The trend continues through the spring months, with March offering 303 hours and April blooming into 331 hours. This sunshine peak stretches into the early summer, reaching 374 hours in May and slightly surpassing it in June with 375 hours. The sun shines brightest in July, with an impressive 379 hours before gradually tapering off as autumn approaches. By August, sunshine remains abundant at 362 hours, but the decline begins, leading into the varied fare of September and October, each presenting fewer sunny hours. As winter returns in November and December, the daylight dims to 261 and 231 hours, respectively, completing the cyclical dance of sunshine throughout the year. This seasonal rhythm offers a captivating glimpse of Julian's climate, where each month brings its own light and warmth.

Monthly Sunshine Duration in Julian: January Highlighted

The January sunshine duration represents the total number of hours Julian 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.
JanFebMarAprMayJunJulAugSepOctNovDec194h250h303h331h374h375h379h362h323h302h261h231h
Data source: Julian January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Julian During January

In Julian, California, January greets visitors with a 59% chance of sunny weather, making it a promising start to the year. While winter months tend to see slightly lower chances of sunshine, they transition smoothly into sunnier periods as the year progresses. For example, February jumps to 66%, and by April, the likelihood climbs to 69%, culminating in a remarkable 81% chance of sun by May. This trend highlights Julian's gradual shift from winter's brisk days to the radiant warmth of spring and summer, where August and September boast an impressive 84% and 85% sunny days, respectively. The data underscores Julian's appeal as a destination where the sunny disposition of spring and summer is just around the corner after the cooler January days.

Percentage of Sunny Days in January in Julian

The chart illustrates the percentage of sunny days in Julian 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 Julian experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec59%66%62%69%81%72%58%84%85%68%74%46%
Data source: Julian January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Julian in January

In January, Julian, United States experiences 10 hours of daylight, marking the start of a gradual increase that unfolds over the coming months. By February, daylight extends to 11 hours, setting the stage for the progressive lengthening of days as spring approaches. March brings a boost to 12 hours, while April and May maintain this upward trend at 13 hours, allowing residents to bask in more sunlight. June and July peak at a delightful 14 hours, offering long, sun-soaked days perfect for outdoor activities. As summer fades, August sees a slight decrease back to 13 hours, followed by a gentle decline into September’s 12 hours. October and November continue this trend, with daylight dwindling to 11 and then 10 hours. Finally, December closes the year with just 9 hours, reminding us of the cyclical nature of daylight throughout the seasons. This rhythmic pattern highlights Julian's distinct seasonal shifts, inviting residents and visitors alike to embrace each unique phase of the year.

Average Daylight Hours in Julian for January

The chart illustrates the variation in daylight duration in Julian throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 14m11h12h13h 1m13h 52m14h 17m14h 3m13h 18m12h 19m11h 18m10h 25m9h 59m
Data source: Julian daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Julian

In January, Julian, United States, experiences a gentle breeze with an average wind speed of 2.1 m/s (5 mph), setting the tone for a calm winter month. This consistent wind speed persists into February, maintaining a similar vibe. As spring approaches, the winds begin to pick up slightly in March and April, reaching 2.6 m/s (6 mph) and 2.8 m/s (6 mph) respectively, creating an invigorating atmosphere perfect for outdoor activities. Interestingly, July brings the calmest winds of the year at 1.7 m/s (4 mph), which gradually rise again as summer fades into autumn. Through the closing months of the year, wind speeds fluctuate around 1.8 to 2.1 m/s (4-5 mph), providing a soothing backdrop to the seasonal transitions. Overall, Julian's wind patterns showcase a subtle ebb and flow, with the most noticeable shifts occurring during the transition from winter to spring.

Average January Wind Speed in Julian

The chart displays monthly wind speed patterns in Julian, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.1 m/s2.12.62.82.62.21.71.92.02.11.82.0
Data source: Julian January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Julian Compares to Other Months

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

In January, the weather in Julian features a minimum temperature of -3°C (27°F) and an average high of 25°C (78°F), with 45 mm (1.8 in) of precipitation over about 5 days. By February, the temperatures remain fairly stable, continuing to have a minimum of -3°C (28°F) and an average max of 26°C (79°F), although the precipitation increases to 53 mm (2.1 in) over 6 days, contributing to a rise in humidity to 77%. Overall, February sees slightly warmer conditions and increased precipitation compared to January. For more detailed insights, visit Julian weather in February.

In January, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable maximum of 25°C (78°F), with an average of 10°C (51°F). The month experiences about 45 mm (1.8 in) of precipitation spread over 5 days, contributing to a relatively high humidity level of 72%. In contrast, March sees slightly warmer conditions, with minimums around -1°C (30°F) and maximums reaching up to 29°C (84°F), averaging at 12°C (53°F). The precipitation decreases to 37 mm (1.5 in), but it falls over a longer duration of 7 days, resulting in a lower humidity of 67%. For more detailed weather insights in March, check out Julian weather in March.

January and April exhibit notable differences in weather patterns. January experiences cooler temperatures, with a minimum of -3°C (27°F) and an average of 10°C (51°F), while April enjoys milder conditions, starting from a minimum of 3°C (38°F) and an average of 16°C (60°F). The maximum temperature in April can reach a warm 34°C (93°F), significantly higher than January's maximum of 25°C (78°F). Precipitation is also more frequent in January, with 45 mm (1.8 in) over 5 days, compared to April's lighter rainfall of 17 mm (0.7 in) over just 2 days. Additionally, January tends to be more humid at 72%, while April's humidity drops to 56%. For more detailed insights, you can view Julian weather in April.

January and May offer distinctly different weather experiences. In January, temperatures range from a chilly minimum of -3°C (27°F) to a pleasant average of 10°C (51°F), peaking at a comfortable 25°C (78°F). The month sees about 45 mm (1.8 in) of precipitation over five days, with humidity levels at a relatively high 72%. In contrast, May ushers in significantly warmer conditions, with temperatures ranging from a mild minimum of 4°C (39°F) to a balmy average of 18°C (64°F), soaring to a maximum of 36°C (97°F). Precipitation decreases to just 11 mm (0.4 in) over only two days, and humidity drops to a more comfortable 46%. For a detailed look at the weather in May, check out Julian weather in May.

January weather contrasts sharply with the warmth of June, showcasing the seasonal shift. In January, temperatures can dip as low as -3°C (27°F) and average around 10°C (51°F), with a maximum of 25°C (78°F). The month sees about 45 mm (1.8 in) of precipitation over five days, accompanied by a higher humidity of 72%. In stark contrast, June brings a milder minimum temperature of 8°C (46°F) but averages a pleasant 23°C (74°F), peaking at a sweltering 40°C (105°F). Rainfall is minimal in June, with just 2 mm (0.1 in) and no recorded rain days, resulting in a lower humidity level of 48%. For more information on June weather, visit Julian weather in June.

In January, the weather in Julian features a wide temperature range, with minimums dipping to -3°C (27°F) and average daytime highs reaching around 10°C (51°F), peaking at 25°C (78°F). This month experiences moderate precipitation, totaling 45 mm (1.8 in) over about five days, accompanied by high humidity at 72%. In contrast, July boasts much warmer conditions, with minimum temperatures starting at 12°C (53°F) and averages soaring to 27°C (80°F), with maximums potentially hitting 40°C (104°F). Rainfall is sparse, with only 18 mm (0.7 in) over three days and lower humidity at 46%. For a more detailed look at the July weather patterns, you can refer to Julian weather in July.

January and August present a stark contrast in weather conditions. In January, temperatures range from a minimum of -3°C (27°F) to a maximum of 25°C (78°F), with an average of 10°C (51°F). The month sees around 45 mm (1.8 in) of precipitation over five days, accompanied by higher humidity levels at 72%. In contrast, August boasts much warmer temperatures, with a minimum of 14°C (57°F) and a scorching maximum of 41°C (106°F), averaging at 27°C (80°F). Rainfall is significantly reduced to just 14 mm (0.6 in) over four days, and the humidity drops to a more comfortable 42%. For more details on the weather specifics, check Julian weather in August.

January and September present contrasting weather conditions. January experiences chilly temperatures with a minimum of -3°C (27°F) and an average of 10°C (51°F), while September boasts milder conditions, starting with a minimum of 8°C (46°F) and averaging 24°C (75°F). The maximum temperatures in January can reach up to 25°C (78°F), whereas September enjoys significantly warmer extremes, peaking at a scorching 43°C (109°F). Precipitation is more frequent in January, with 45 mm (1.8 in) over five days, compared to September's drier spell of just 12 mm (0.5 in) over two days. Additionally, January's humidity sits at a higher 72%, while September is more comfortable at 52%. For a detailed look at the September weather in Julian, you can visit Julian weather in September.

January and October present a stark contrast in weather conditions. In January, temperatures can drop to a chilly -3°C (27°F) at night, with an average of 10°C (51°F) and maximums reaching 25°C (78°F). This month also sees a fair amount of precipitation, with 45 mm (1.8 in) recorded over around 5 days, contributing to a relatively high humidity level of 72%. In comparison, October enjoys milder temperatures with minimums around 3°C (39°F), averages of 19°C (66°F), and highs soaring up to 36°C (98°F). The month is notably drier, experiencing only 10 mm (0.4 in) of precipitation over just one day, along with lower humidity at 58%. For more details on Julian's October weather, check out Julian weather in October.

In January, the weather is generally cooler, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 25°C (78°F) and an average of 10°C (51°F). The month experiences approximately 45 mm (1.8 in) of precipitation over about 5 days, combined with relatively high humidity at 72%. In contrast, November offers milder conditions, with temperatures varying from a minimum of 2°C (35°F) to a maximum of 31°C (87°F), and an average of 15°C (59°F). This month sees significantly less precipitation, totaling around 20 mm (0.8 in) over just 2 days, alongside slightly lower humidity at 66%. For more details on the weather conditions specific to November, you can check Julian weather in November.

In comparing the weather between January and December, both months exhibit strikingly similar conditions, with January showing a minimum temperature of -3°C (27°F) and an average of 10°C (51°F), closely matching December’s range with identical minimums and an average of 10°C (51°F). The maximum temperature slightly varies, reaching 25°C (78°F) in January versus 26°C (79°F) in December. Precipitation levels are almost equivalent, with January receiving 45 mm (1.8 in) and December experiencing a slight increase to 47 mm (1.9 in), both recorded over 5 days. Humidity remains consistent as well, at 72% in January and 74% in December, contributing to the overall feel of the months. For more detailed insights, refer to Julian weather in December.

Compare Julian's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Julian

As January rolls into Julian, winter's chill blankets the town, making it distinctly different from the warmer months. During this time, average temperatures hover around a brisk 10°C (51°F), with the occasional peak at a comfortable 25°C (78°F), providing a brief reprieve from the cold. While rainfall is moderate, occurring on just a handful of days, enhanced humidity levels add a touch of crispness to the air, emphasizing the season's stark contrast to the dry summers. For those looking to understand the nuances of Julian's seasonal shifts, visit Julian Climate for a comprehensive outlook.