May Weather in Stillwater, United States

Last updated: June 24, 2025

In May, the average temperature in Stillwater, United States hovers around 15°C (59°F). While the minimum can dip as low as -1°C (30°F), the maximum can soar to 35°C (96°F). Expect 134 mm (5.3 in) of precipitation over 12 days, coupled with a humidity level averaging 78%.

May Temperature in Stillwater

In May in Stillwater, the average temperature is 15°C (59°F), with maximums reaching 35°C (96°F) and minimums dropping as low as -1°C (30°F). This wide range makes Stillwater a destination where you should be prepared for both warm and cold weather.

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

The chart illustrates May temperature patterns in Stillwater, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stillwater, May typically has an average temperature of 15°C (59°F), with highs reaching up to 35°C (96°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Stillwater

In Stillwater in May, the precipitation amount is 134 mm (5.3 in) over a period of 12 days.

May Precipitation Trends in Stillwater

The chart displays monthly precipitation patterns in Stillwater, 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 Stillwater, May typically receives around 134 mm (5.3 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 Stillwater

In Stillwater 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 Stillwater

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

In Stillwater 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 Stillwater.

Maximum UV Index Levels in Stillwater for May

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

Data source: Stillwater 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 Stillwater Compares to Other Months

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

This table compares monthly weather conditions in Stillwater, 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)	29 mm (1.1 inches)	87%	low
February Weather	-8°C (17°F)	38 mm (1.5 inches)	90%	moderate
March Weather	0°C (33°F)	56 mm (2.2 inches)	85%	moderate
April Weather	6°C (43°F)	87 mm (3.4 inches)	84%	high
May Weather	15°C (59°F)	134 mm (5.3 inches)	78%	very high
June Weather	21°C (71°F)	103 mm (4.1 inches)	80%	very high
July Weather	23°C (74°F)	104 mm (4.1 inches)	81%	very high
August Weather	21°C (70°F)	122 mm (4.8 inches)	81%	very high
September Weather	18°C (64°F)	110 mm (4.3 inches)	81%	high
October Weather	9°C (48°F)	102 mm (4.0 inches)	84%	moderate
November Weather	0°C (33°F)	39 mm (1.5 inches)	88%	moderate
December Weather	-5°C (23°F)	55 mm (2.2 inches)	84%	low