May Weather in Foresthill, United States

Last updated: June 24, 2025

In Foresthill, United States, the average temperature in May hovers around 15°C (59°F). However, don’t be surprised if temperatures swing between a chilly 0°C (31°F) and a warm 32°C (90°F). Expect about 78 mm (3.1 in) of precipitation spread across 8 days, contributing to an average humidity of 74%. Plan accordingly to enjoy the best of what the month has to offer!

May Temperature in Foresthill

In May in Foresthill, the average temperature is 15°C (59°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 0°C (31°F). This wide range means travelers should pack accordingly, bringing both lighter clothing for warm days and warmer layers for chilly evenings.

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

The chart illustrates May temperature patterns in Foresthill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Foresthill, May typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (31°F).

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

May Precipitation in Foresthill

In Foresthill in May, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.

May Precipitation Trends in Foresthill

The chart displays monthly precipitation patterns in Foresthill, 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 Foresthill, May typically receives around 78 mm (3.1 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 Foresthill

In Foresthill in May, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.

May Average Humidity in Foresthill

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

In Foresthill 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 Foresthill.

Maximum UV Index Levels in Foresthill for May

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

Data source: Foresthill 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 Foresthill Compares to Other Months

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

This table compares monthly weather conditions in Foresthill, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (42°F)	253 mm (9.9 inches)	84%	moderate
February Weather	6°C (43°F)	254 mm (10.0 inches)	84%	moderate
March Weather	7°C (45°F)	262 mm (10.3 inches)	83%	very high
April Weather	11°C (52°F)	126 mm (5.0 inches)	81%	very high
May Weather	15°C (59°F)	78 mm (3.1 inches)	74%	extreme
June Weather	20°C (69°F)	14 mm (0.6 inches)	64%	extreme
July Weather	24°C (76°F)	2 mm (0.1 inches)	44%	extreme
August Weather	24°C (75°F)	4 mm (0.1 inches)	36%	very high
September Weather	20°C (68°F)	20 mm (0.8 inches)	44%	very high
October Weather	14°C (58°F)	69 mm (2.7 inches)	65%	high
November Weather	9°C (49°F)	143 mm (5.6 inches)	84%	moderate
December Weather	5°C (42°F)	194 mm (7.6 inches)	83%	moderate