May Weather in Central Valley, United States

Last updated: June 24, 2025

In May, the average temperature in Central Valley, United States is a cool 11°C (52°F). Temperatures can swing dramatically, with minimums reaching -9°C (16°F) and maximums peaking at 29°C (85°F). Expect to see 44 mm (1.7 in) of precipitation over 8 days, accompanied by an average humidity of 54%.

May Temperature in Central Valley

In May in Central Valley, the average temperature is 11°C (52°F). Maximums can reach 29°C (85°F), and minimums can drop as low as -9°C (16°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

May Weather in Central Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Central Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Central Valley, May typically has an average temperature of 11°C (52°F), with highs reaching up to 29°C (85°F) and lows dropping to around -9°C (16°F).

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

May Precipitation in Central Valley

In Central Valley in May, the total precipitation amount is 44 mm (1.7 in) over a duration of 8 days.

May Precipitation Trends in Central Valley

The chart displays monthly precipitation patterns in Central Valley, 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 Central Valley, May typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 8 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 Central Valley

In Central Valley in May, humidity is 54%. With an average temperature of 11°C (52°F), this humidity feels like a refreshing chill in the air, making it an ideal time for exploring the outdoors without the discomfort of heavy humidity.

May Average Humidity in Central Valley

This chart illustrates the average monthly humidity levels in Central Valley, 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 Central Valley is approximately 54%, 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 Central Valley

In Central Valley in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Central Valley.

Maximum UV Index Levels in Central Valley for May

The chart shows the monthly maximum UV Index (UVI) for Central Valley 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 Central Valley typically reaches 11, which falls under the extreme exposure category.

Data source: Central Valley 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 Central Valley Compares to Other Months

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

This table compares monthly weather conditions in Central Valley, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	42 mm (1.6 inches)	87%	moderate
February Weather	-4°C (26°F)	55 mm (2.2 inches)	88%	high
March Weather	0°C (33°F)	59 mm (2.3 inches)	77%	very high
April Weather	5°C (42°F)	46 mm (1.8 inches)	69%	extreme
May Weather	11°C (52°F)	44 mm (1.7 inches)	54%	extreme
June Weather	19°C (66°F)	8 mm (0.3 inches)	45%	extreme
July Weather	22°C (72°F)	21 mm (0.8 inches)	37%	extreme
August Weather	21°C (71°F)	20 mm (0.8 inches)	34%	extreme
September Weather	16°C (61°F)	23 mm (0.9 inches)	47%	very high
October Weather	7°C (44°F)	36 mm (1.4 inches)	67%	high
November Weather	2°C (37°F)	27 mm (1.1 inches)	82%	high
December Weather	-4°C (25°F)	40 mm (1.6 inches)	87%	moderate