May Weather in Rio Dell, United States

Last updated: June 24, 2025

In May, the average temperature in Rio Dell, United States hovers around 12°C (53°F). Expect a minimum of 1°C (34°F) and a maximum reaching 27°C (81°F). With 65 mm (2.6 in) of precipitation spread over 5 days, be prepared for some rain. Don't forget, the average humidity is a comfortable 81%, creating a refreshing atmosphere.

May Temperature in Rio Dell

In May in Rio Dell, the average temperature is 12°C (53°F). Maximums can reach 27°C (81°F), and minimums can be as low as 1°C (34°F). This variation in temperatures makes Rio Dell a destination suitable for a range of outdoor activities, so pack accordingly!

May Weather in Rio Dell: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Rio Dell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Dell, May typically has an average temperature of 12°C (53°F), with highs reaching up to 27°C (81°F) and lows dropping to around 1°C (34°F).

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

May Precipitation in Rio Dell

In Rio Dell, in May, the precipitation amount is 65 mm (2.6 in) over a period of 5 days.

May Precipitation Trends in Rio Dell

The chart displays monthly precipitation patterns in Rio Dell, 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 Rio Dell, May typically receives around 65 mm (2.6 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 Rio Dell

In Rio Dell in May, humidity is 81%. With an average temperature of 12°C (53°F), this humidity feels like a chilly dampness enveloping you, making outdoor activities uncomfortable and requiring layers to stay warm while you explore.

May Average Humidity in Rio Dell

This chart illustrates the average monthly humidity levels in Rio Dell, 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 Rio Dell is approximately 81%, 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 Rio Dell

In Rio Dell 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 Rio Dell.

Maximum UV Index Levels in Rio Dell for May

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

Data source: Rio Dell 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 Rio Dell Compares to Other Months

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

This table compares monthly weather conditions in Rio Dell, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	214 mm (8.4 inches)	86%	moderate
February Weather	7°C (44°F)	201 mm (7.9 inches)	85%	moderate
March Weather	8°C (46°F)	177 mm (7.0 inches)	85%	high
April Weather	10°C (49°F)	101 mm (4.0 inches)	82%	very high
May Weather	12°C (53°F)	65 mm (2.6 inches)	81%	very high
June Weather	15°C (59°F)	16 mm (0.6 inches)	79%	extreme
July Weather	17°C (62°F)	2 mm (0.1 inches)	70%	very high
August Weather	18°C (64°F)	1 mm (0.0 inches)	60%	very high
September Weather	16°C (61°F)	23 mm (0.9 inches)	62%	very high
October Weather	13°C (55°F)	59 mm (2.3 inches)	72%	high
November Weather	9°C (49°F)	128 mm (5.1 inches)	87%	moderate
December Weather	6°C (44°F)	155 mm (6.1 inches)	86%	low