May Weather in River Falls, United States

Last updated: June 24, 2025

In May, the average temperature in River Falls, United States hovers around 15°C (59°F), but be prepared for a wide range; it can dip to a chilling -1°C (31°F) or soar to a sizzling 36°C (97°F). Expect 143 mm (5.6 in) of precipitation spread over 13 days, with humidity levels averaging a damp 78%.

May Temperature in River Falls

In May in River Falls, the average temperature is 15°C (59°F). The maximum can reach 36°C (97°F), while the minimum can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling to River Falls during this month.

May Weather in River Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in River Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In River Falls, May typically has an average temperature of 15°C (59°F), with highs reaching up to 36°C (97°F) and lows dropping to around -1°C (31°F).

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

May Precipitation in River Falls

In River Falls in May, the precipitation amount is 143 mm (5.6 in) over a span of 13 days.

May Precipitation Trends in River Falls

The chart displays monthly precipitation patterns in River Falls, 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 River Falls, May typically receives around 143 mm (5.6 inches) of precipitation spread over approximately 13 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 River Falls

In River Falls in May, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

May Average Humidity in River Falls

This chart illustrates the average monthly humidity levels in River Falls, 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 River Falls is approximately 78%, 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 River Falls

In River Falls in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in River Falls.

Maximum UV Index Levels in River Falls for May

The chart shows the monthly maximum UV Index (UVI) for River Falls 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 River Falls typically reaches 9, which falls under the very high exposure category.

Data source: River Falls 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 River Falls Compares to Other Months

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

This table compares monthly weather conditions in River Falls, 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 (17°F)	32 mm (1.3 inches)	87%	low
February Weather	-8°C (18°F)	42 mm (1.7 inches)	90%	moderate
March Weather	1°C (33°F)	58 mm (2.3 inches)	85%	moderate
April Weather	6°C (44°F)	89 mm (3.5 inches)	84%	high
May Weather	15°C (59°F)	143 mm (5.6 inches)	78%	very high
June Weather	21°C (71°F)	125 mm (4.9 inches)	80%	very high
July Weather	23°C (74°F)	109 mm (4.3 inches)	81%	very high
August Weather	21°C (70°F)	126 mm (5.0 inches)	81%	very high
September Weather	18°C (64°F)	112 mm (4.4 inches)	81%	high
October Weather	9°C (48°F)	104 mm (4.1 inches)	84%	moderate
November Weather	1°C (33°F)	41 mm (1.6 inches)	88%	moderate
December Weather	-5°C (24°F)	53 mm (2.1 inches)	84%	low