January Weather in Campbell, United States

Last updated: June 24, 2025

In January, the average temperature in Campbell, United States is a brisk 4°C (39°F). You can expect a wide range in temperatures, with minimums dipping as low as -16°C (3°F) and maximums reaching up to 22°C (72°F). Be prepared for some rain as the area typically sees about 108 mm (4.3 in) of precipitation over 9 days. Furthermore, the average humidity hovers around a high 83%, adding to the chilly atmosphere.

January Temperature in Campbell

In January in Campbell, the average temperature is 4°C (39°F), with maximums reaching 22°C (72°F) and minimums dipping as low as -16°C (3°F). Travelers should be prepared for a wide range of temperatures during this time, ensuring they pack both warm and lighter clothing.

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

The chart illustrates January temperature patterns in Campbell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Campbell, January typically has an average temperature of 4°C (39°F), with highs reaching up to 22°C (72°F) and lows dropping to around -16°C (3°F).

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

January Precipitation in Campbell

In Campbell in January, the precipitation amount is 108 mm (4.3 in) spread over 9 days.

January Precipitation Trends in Campbell

The chart displays monthly precipitation patterns in Campbell, 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 Campbell, January typically receives around 108 mm (4.3 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 Campbell

In Campbell in January, humidity is 83%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor activities feel brisk and uncomfortable for traveling.

January Average Humidity in Campbell

This chart illustrates the average monthly humidity levels in Campbell, 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 Campbell is approximately 83%, 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 Campbell

In Campbell 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 Campbell, you can check the information here.

Maximum UV Index Levels in Campbell for January

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

Data source: Campbell 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 Campbell Compares to Other Months

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

This table compares monthly weather conditions in Campbell, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	108 mm (4.3 inches)	83%	moderate
February Weather	5°C (42°F)	143 mm (5.6 inches)	81%	high
March Weather	11°C (52°F)	167 mm (6.6 inches)	80%	high
April Weather	15°C (59°F)	156 mm (6.1 inches)	80%	very high
May Weather	21°C (70°F)	135 mm (5.3 inches)	83%	very high
June Weather	25°C (78°F)	104 mm (4.1 inches)	83%	extreme
July Weather	27°C (81°F)	88 mm (3.5 inches)	76%	extreme
August Weather	26°C (79°F)	115 mm (4.5 inches)	69%	very high
September Weather	23°C (74°F)	79 mm (3.1 inches)	68%	very high
October Weather	17°C (62°F)	119 mm (4.7 inches)	72%	high
November Weather	9°C (48°F)	102 mm (4.0 inches)	83%	moderate
December Weather	6°C (44°F)	102 mm (4.0 inches)	86%	moderate