January Weather in Gridley, United States

Last updated: June 24, 2025

In January, the average temperature in Gridley, United States is a cool 10°C (50°F), with temperatures ranging from a brisk -1°C (30°F) to a pleasant 25°C (77°F). Expect 124 mm (4.9 in) of precipitation over 9 days, contributing to an average humidity of 84%. Whether you enjoy the crisp air or the cozy indoor vibes, there's something for everyone this month!

January Temperature in Gridley

In January in Gridley, the average temperature is 10°C (50°F), with maximums reaching 25°C (77°F) and minimums dipping as low as -1°C (30°F). This makes it an ideal time for travelers to enjoy a range of outdoor activities, from cozy strolls to invigorating hikes.

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

The chart illustrates January temperature patterns in Gridley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gridley, January typically has an average temperature of 10°C (50°F), with highs reaching up to 25°C (77°F) and lows dropping to around -1°C (30°F).

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

January Precipitation in Gridley

In Gridley in January, the precipitation amount is 124 mm (4.9 in) over the course of 9 days.

January Precipitation Trends in Gridley

The chart displays monthly precipitation patterns in Gridley, 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 Gridley, January typically receives around 124 mm (4.9 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 Gridley

In Gridley in January, humidity is 84%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and prompting travelers to seek refuge in cozy, warm cafes or indoor attractions.

January Average Humidity in Gridley

This chart illustrates the average monthly humidity levels in Gridley, 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 Gridley is approximately 84%, 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 Gridley

In Gridley 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 Gridley, you can check the information here.

Maximum UV Index Levels in Gridley for January

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

Data source: Gridley 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 Gridley Compares to Other Months

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

This table compares monthly weather conditions in Gridley, 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)	124 mm (4.9 inches)	84%	moderate
February Weather	12°C (53°F)	121 mm (4.8 inches)	84%	moderate
March Weather	14°C (57°F)	107 mm (4.2 inches)	83%	high
April Weather	18°C (64°F)	50 mm (2.0 inches)	81%	very high
May Weather	22°C (72°F)	29 mm (1.2 inches)	74%	very high
June Weather	27°C (81°F)	5 mm (0.2 inches)	64%	extreme
July Weather	29°C (85°F)	1 mm (0.0 inches)	44%	very high
August Weather	28°C (83°F)	0 mm (0.0 inches)	36%	very high
September Weather	25°C (77°F)	3 mm (0.1 inches)	44%	very high
October Weather	19°C (67°F)	35 mm (1.4 inches)	65%	high
November Weather	13°C (56°F)	58 mm (2.3 inches)	84%	moderate
December Weather	10°C (50°F)	99 mm (3.9 inches)	83%	moderate