January Weather in Roseville, United States

Last updated: June 24, 2025

In January, the average temperature in Roseville, United States hovers around -3°C (26°F). Expect a chilly range, with minima plunging as low as -30°C (-22°F) and reaching a maximum of 14°C (58°F). Precipitation is common, averaging 58 mm (2.3 in) over approximately 8 days, and the air stays quite damp with an average humidity of 81%. Be sure to bundle up!

January Temperature in Roseville

In January in Roseville, the average temperature is -3°C (26°F), with maximums reaching 14°C (58°F) and minimums dropping as low as -30°C (-22°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for varying weather conditions.

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

The chart illustrates January temperature patterns in Roseville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roseville, January typically has an average temperature of -3°C (26°F), with highs reaching up to 14°C (58°F) and lows dropping to around -30°C (-22°F).

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

January Precipitation in Roseville

In Roseville in January, the precipitation amount is 58 mm (2.3 in) over a span of 8 days.

January Precipitation Trends in Roseville

The chart displays monthly precipitation patterns in Roseville, 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 Roseville, January typically receives around 58 mm (2.3 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 Roseville

In Roseville in January, humidity is 81%. With an average temperature of -3°C (26°F), this humidity feels like an icy blanket wrapping around you, making travel uncomfortable and the cold air penetrate your clothes, turning every step into a brisk challenge.

January Average Humidity in Roseville

This chart illustrates the average monthly humidity levels in Roseville, 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 Roseville 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 Roseville

In Roseville 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 Roseville, you can check the information here.

Maximum UV Index Levels in Roseville for January

The chart shows the monthly maximum UV Index (UVI) for Roseville 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 Roseville typically reaches 3, which falls under the moderate exposure category.

Data source: Roseville 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 Roseville Compares to Other Months

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

This table compares monthly weather conditions in Roseville, 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 (26°F)	58 mm (2.3 inches)	81%	moderate
February Weather	-2°C (29°F)	62 mm (2.5 inches)	81%	moderate
March Weather	5°C (42°F)	110 mm (4.3 inches)	81%	high
April Weather	10°C (51°F)	102 mm (4.0 inches)	82%	very high
May Weather	18°C (64°F)	170 mm (6.7 inches)	78%	very high
June Weather	24°C (75°F)	141 mm (5.6 inches)	81%	extreme
July Weather	25°C (78°F)	96 mm (3.8 inches)	79%	very high
August Weather	24°C (75°F)	80 mm (3.1 inches)	77%	very high
September Weather	21°C (70°F)	96 mm (3.8 inches)	78%	very high
October Weather	13°C (55°F)	119 mm (4.7 inches)	78%	high
November Weather	4°C (40°F)	51 mm (2.0 inches)	87%	moderate
December Weather	1°C (34°F)	48 mm (1.9 inches)	84%	low