January Weather in Pleasant Hill, United States

Last updated: June 24, 2025

In January, the average temperature in Pleasant Hill, United States hovers around -3°C (27°F), with extremes ranging from a brisk -30°C (-21°F) to a surprising 17°C (62°F). Expect about 65 mm (2.6 in) of precipitation over 8 days, contributing to an average humidity level of 82%. Bundle up and prepare for a moody climate as you explore!

January Temperature in Pleasant Hill

In January in Pleasant Hill, the average temperature is -3°C (27°F). The maximum can reach 17°C (62°F), while the minimum can drop as low as -30°C (-21°F). Be prepared for cold weather and pack accordingly if you plan to travel during this time.

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 -3°C (27°F), with highs reaching up to 17°C (62°F) and lows dropping to around -30°C (-21°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 total precipitation amount is 65 mm (2.6 in) spread over the course of 8 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 65 mm (2.6 inches) of precipitation spread over approximately 8 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 82%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making traveling uncomfortable and necessitating extra layers to stay warm while navigating through the damp air.

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 82%, 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 is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Pleasant Hill, you can check the information here.

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 3, 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	-3°C (27°F)	65 mm (2.6 inches)	82%	moderate
February Weather	-1°C (30°F)	70 mm (2.8 inches)	83%	high
March Weather	5°C (42°F)	113 mm (4.5 inches)	84%	high
April Weather	11°C (51°F)	116 mm (4.6 inches)	85%	very high
May Weather	18°C (64°F)	155 mm (6.1 inches)	79%	very high
June Weather	23°C (74°F)	112 mm (4.4 inches)	82%	extreme
July Weather	25°C (77°F)	95 mm (3.8 inches)	80%	very high
August Weather	23°C (74°F)	99 mm (3.9 inches)	81%	very high
September Weather	21°C (70°F)	63 mm (2.5 inches)	80%	very high
October Weather	13°C (57°F)	123 mm (4.9 inches)	82%	high
November Weather	5°C (41°F)	63 mm (2.5 inches)	88%	moderate
December Weather	1°C (35°F)	54 mm (2.1 inches)	84%	low