January Weather in Pleasant Hill, United States

Last updated: June 24, 2025

In Pleasant Hill, United States, the average temperature in January hovers around 10°C (50°F), with extremes ranging from a chilly -10°C (15°F) to a warm 27°C (81°F). Prepare for some moisture, as 104 mm (4.1 in) of precipitation is expected over 9 days, and don't forget to account for the 81% average humidity that contributes to the overall climate experience.

January Temperature in Pleasant Hill

In January in Pleasant Hill, the average temperature is 10°C (50°F). The maximum can reach 27°C (81°F), and the minimum can be as low as -10°C (15°F). This wide range of temperatures makes it important to pack layers for your travel to Pleasant Hill.

January Weather in Pleasant Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Pleasant Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pleasant Hill, January typically has an average temperature of 10°C (50°F), with highs reaching up to 27°C (81°F) and lows dropping to around -10°C (15°F).

Data source: Temperature data for Pleasant Hill generated using information from the Copernicus Climate Change Service.

January Precipitation in Pleasant Hill

In Pleasant Hill in January, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.

January Precipitation Trends in Pleasant Hill

The chart displays monthly precipitation patterns in Pleasant Hill, 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. In Pleasant Hill, January typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Pleasant Hill

In Pleasant Hill in January humidity is 81%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable and might leave travelers feeling heavy and lethargic as the moisture clings to their skin.

January Average Humidity in Pleasant Hill

This chart illustrates the average monthly humidity levels in Pleasant Hill, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Pleasant Hill is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Pleasant Hill

In Pleasant Hill in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Pleasant Hill.

Maximum UV Index Levels in Pleasant Hill for January

The chart shows the monthly maximum UV Index (UVI) for Pleasant Hill 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. In January, the maximum UV index in Pleasant Hill typically reaches 5, which falls under the moderate exposure category.

Data source: Pleasant Hill 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.

How January Weather in Pleasant Hill Compares to Other Months

Weather in Pleasant Hill varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Pleasant Hill, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Pleasant Hill, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	104 mm (4.1 inches)	81%	moderate
February Weather	12°C (53°F)	155 mm (6.1 inches)	81%	very high
March Weather	17°C (62°F)	125 mm (4.9 inches)	79%	very high
April Weather	19°C (66°F)	158 mm (6.2 inches)	80%	extreme
May Weather	24°C (75°F)	179 mm (7.1 inches)	81%	extreme
June Weather	27°C (81°F)	122 mm (4.8 inches)	76%	extreme
July Weather	28°C (83°F)	98 mm (3.9 inches)	73%	extreme
August Weather	28°C (83°F)	144 mm (5.7 inches)	71%	extreme
September Weather	26°C (79°F)	120 mm (4.7 inches)	72%	very high
October Weather	21°C (69°F)	107 mm (4.2 inches)	73%	very high
November Weather	14°C (58°F)	75 mm (3.0 inches)	83%	high
December Weather	12°C (54°F)	137 mm (5.4 inches)	88%	moderate