May Weather in Chico, United States

Last updated: June 24, 2025

In May, the average temperature in Chico, United States hovers around 20°C (69°F), with minimums dipping to 4°C (40°F) and maximums peaking at 38°C (100°F). Expect about 47 mm (1.9 in) of precipitation over the course of 4 days, while the average humidity rests at a comfortable 74%. Enjoy the blend of warmth and occasional showers!

May Temperature in Chico

In May in Chico, the average temperature is 20°C (69°F). The maximum can reach 38°C (100°F), and the minimum can be as low as 4°C (40°F). Pack accordingly to enjoy a range of activities in this diverse climate!

May Weather in Chico: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Chico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chico, May typically has an average temperature of 20°C (69°F), with highs reaching up to 38°C (100°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Chico

In Chico in May, the precipitation amount is 47 mm (1.9 in) over the course of 4 days.

May Precipitation Trends in Chico

The chart displays monthly precipitation patterns in Chico, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Chico, May typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 4 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Chico

In Chico in May, humidity is 74%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities a bit sticky and requiring frequent breaks for hydration, but with the right pacing, you can still enjoy the sights and sounds of your surroundings.

May Average Humidity in Chico

This chart illustrates the average monthly humidity levels in Chico, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Chico is approximately 74%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Chico

In Chico in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chico.

Maximum UV Index Levels in Chico for May

The chart shows the monthly maximum UV Index (UVI) for Chico in May, 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 May, the maximum UV index in Chico typically reaches 10, which falls under the very high exposure category.

Data source: Chico May 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 May Weather in Chico Compares to Other Months

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

This table compares monthly weather conditions in Chico, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	183 mm (7.2 inches)	84%	moderate
February Weather	10°C (51°F)	199 mm (7.8 inches)	84%	moderate
March Weather	12°C (54°F)	156 mm (6.2 inches)	83%	high
April Weather	16°C (61°F)	79 mm (3.1 inches)	81%	very high
May Weather	20°C (69°F)	47 mm (1.9 inches)	74%	very high
June Weather	26°C (79°F)	8 mm (0.3 inches)	64%	extreme
July Weather	29°C (85°F)	1 mm (0.0 inches)	44%	extreme
August Weather	28°C (83°F)	1 mm (0.0 inches)	36%	very high
September Weather	24°C (76°F)	8 mm (0.3 inches)	44%	very high
October Weather	18°C (65°F)	53 mm (2.1 inches)	65%	high
November Weather	12°C (55°F)	96 mm (3.8 inches)	84%	moderate
December Weather	9°C (48°F)	140 mm (5.5 inches)	83%	moderate