May Weather in Saint Paul, United States

Last updated: June 24, 2025

In May, the average temperature in Saint Paul, United States hovers around 15°C (59°F), with a minimum dipping to 0°C (32°F) and a maximum soaring to 36°C (96°F). Expect 134 mm (5.3 in) of precipitation spread over 12 days, contributing to an average humidity of 78%. Enjoy the diverse weather conditions as you explore this vibrant locale!

May Temperature in Saint Paul

In May in Saint Paul, the average temperature is 15°C (59°F), with maximums reaching up to 36°C (96°F) and minimums dropping as low as 0°C (32°F). It’s advisable to pack for both warm days and chilly nights when traveling during this time.

May Weather in Saint Paul: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Saint Paul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Paul, May typically has an average temperature of 15°C (59°F), with highs reaching up to 36°C (96°F) and lows dropping to around 0°C (32°F).

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

May Precipitation in Saint Paul

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

May Precipitation Trends in Saint Paul

The chart displays monthly precipitation patterns in Saint Paul, 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 Saint Paul, 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 Saint Paul

In Saint Paul 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 Saint Paul

This chart illustrates the average monthly humidity levels in Saint Paul, 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 Saint Paul 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 Saint Paul

In Saint Paul in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Saint Paul.

Maximum UV Index Levels in Saint Paul for May

The chart shows the monthly maximum UV Index (UVI) for Saint Paul 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 Saint Paul typically reaches 8, which falls under the very high exposure category.

Data source: Saint Paul 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 Saint Paul Compares to Other Months

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

This table compares monthly weather conditions in Saint Paul, 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)	28 mm (1.1 inches)	87%	low
February Weather	-8°C (17°F)	35 mm (1.4 inches)	90%	moderate
March Weather	0°C (33°F)	56 mm (2.2 inches)	85%	moderate
April Weather	6°C (43°F)	88 mm (3.5 inches)	84%	high
May Weather	15°C (59°F)	134 mm (5.3 inches)	78%	very high
June Weather	22°C (71°F)	91 mm (3.6 inches)	80%	very high
July Weather	24°C (75°F)	104 mm (4.1 inches)	81%	very high
August Weather	22°C (71°F)	125 mm (4.9 inches)	81%	very high
September Weather	18°C (64°F)	114 mm (4.5 inches)	81%	high
October Weather	9°C (49°F)	101 mm (4.0 inches)	84%	moderate
November Weather	1°C (34°F)	37 mm (1.4 inches)	88%	moderate
December Weather	-5°C (23°F)	53 mm (2.1 inches)	84%	low