May Weather in Folsom, United States

Last updated: June 24, 2025

In May, the average temperature in Folsom, United States hovers around 18°C (64°F). Expect some variation, as temperatures can dip to a minimum of 3°C (37°F) and reach a maximum of 35°C (95°F). Be prepared for occasional rain, as 119 mm (4.7 in) of precipitation is expected over about 12 days throughout the month. With an average humidity level of 74%, it’s a good idea to stay hydrated and enjoy the diverse climate!

May Temperature in Folsom

In May in Folsom, the average temperature is 18°C (64°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 3°C (37°F). This temperature range makes Folsom an ideal destination for travelers seeking pleasant weather alongside opportunities for both outdoor activities and cozy indoor experiences.

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

The chart illustrates May temperature patterns in Folsom, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Folsom, May typically has an average temperature of 18°C (64°F), with highs reaching up to 35°C (95°F) and lows dropping to around 3°C (37°F).

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

May Precipitation in Folsom

In Folsom in May, the total precipitation amount is 119 mm (4.7 in), falling over a span of 12 days.

May Precipitation Trends in Folsom

The chart displays monthly precipitation patterns in Folsom, 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 Folsom, May typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 12 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 Folsom

In Folsom in May humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

May Average Humidity in Folsom

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

In Folsom 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 Folsom.

Maximum UV Index Levels in Folsom for May

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

Data source: Folsom 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 Folsom Compares to Other Months

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

This table compares monthly weather conditions in Folsom, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (37°F)	62 mm (2.4 inches)	83%	moderate
February Weather	5°C (41°F)	99 mm (3.9 inches)	82%	moderate
March Weather	7°C (45°F)	108 mm (4.2 inches)	81%	high
April Weather	13°C (55°F)	100 mm (4.0 inches)	79%	very high
May Weather	18°C (64°F)	119 mm (4.7 inches)	74%	very high
June Weather	23°C (74°F)	109 mm (4.3 inches)	77%	very high
July Weather	26°C (79°F)	135 mm (5.3 inches)	76%	very high
August Weather	25°C (77°F)	153 mm (6.0 inches)	77%	very high
September Weather	22°C (72°F)	110 mm (4.3 inches)	74%	very high
October Weather	17°C (62°F)	128 mm (5.0 inches)	75%	high
November Weather	9°C (48°F)	76 mm (3.0 inches)	80%	moderate
December Weather	5°C (41°F)	103 mm (4.1 inches)	81%	moderate