May Weather in Penn Valley, United States

Last updated: June 24, 2025

In May, the average temperature in Penn Valley, United States hovers around 19°C (66°F). Expect a range where the minimum dips to 3°C (38°F) and the maximum can soar up to 36°C (98°F). With 48 mm (1.9 in) of precipitation over 5 days, staying prepared for some dampness is wise. The average humidity level is a comfortable 74%, adding to the area's moderate climate.

May Temperature in Penn Valley

In May in Penn Valley, the average temperature is 19°C (66°F). Maximum temperatures can reach 36°C (98°F), while minimums can drop as low as 3°C (38°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates May temperature patterns in Penn Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Penn Valley, May typically has an average temperature of 19°C (66°F), with highs reaching up to 36°C (98°F) and lows dropping to around 3°C (38°F).

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

May Precipitation in Penn Valley

In Penn Valley in May, the precipitation amount is 48 mm (1.9 in) spread over the course of 5 days.

May Precipitation Trends in Penn Valley

The chart displays monthly precipitation patterns in Penn 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 Penn Valley, May typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 5 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Penn Valley

In Penn Valley in May humidity is 74%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it ideal for leisurely outdoor exploration but potentially heavy for those not accustomed to tropical conditions.

May Average Humidity in Penn Valley

This chart illustrates the average monthly humidity levels in Penn 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 Penn Valley 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 Penn Valley

In Penn Valley 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 Penn Valley.

Maximum UV Index Levels in Penn Valley for May

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

Data source: Penn 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 Penn Valley Compares to Other Months

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

This table compares monthly weather conditions in Penn Valley, 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 (48°F)	196 mm (7.7 inches)	84%	moderate
February Weather	9°C (49°F)	202 mm (8.0 inches)	84%	moderate
March Weather	11°C (52°F)	191 mm (7.5 inches)	83%	high
April Weather	15°C (59°F)	89 mm (3.5 inches)	81%	very high
May Weather	19°C (66°F)	48 mm (1.9 inches)	74%	very high
June Weather	24°C (76°F)	9 mm (0.3 inches)	64%	extreme
July Weather	27°C (81°F)	1 mm (0.0 inches)	44%	extreme
August Weather	26°C (79°F)	1 mm (0.0 inches)	36%	very high
September Weather	23°C (73°F)	12 mm (0.5 inches)	44%	very high
October Weather	17°C (63°F)	62 mm (2.4 inches)	65%	high
November Weather	12°C (53°F)	115 mm (4.5 inches)	84%	moderate
December Weather	8°C (47°F)	170 mm (6.7 inches)	83%	moderate