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May Weather in Saint Paul, United States

Last updated: June 24, 2025

In Saint Paul, United States, the average temperature in May hovers around 23°C (74°F). While the minimum can dip to 8°C (46°F), temperatures can soar to a maximum of 35°C (96°F). Expect around 180 mm (7.1 in) of precipitation spread over 12 days, resulting in an average humidity level of 81%. Prepare for a warm and humid month!

May Temperature in Saint Paul

In May, in Saint Paul, the average temperature is 23°C (74°F). Maximums can reach 35°C (96°F) while minimums can drop to as low as 8°C (46°F). This weather makes Saint Paul an ideal destination for travelers, offering a pleasant climate for outdoor activities and exploration.

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 23°C (74°F), with highs reaching up to 35°C (96°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec464960657481848479675651
Data source: Temperature data for Saint Paul generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Saint Paul

In Saint Paul in May, the precipitation amount is 180 mm (7.1 in) over the course 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 180 mm (7.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec64111121138181915595891485873
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Saint Paul

In Saint Paul in May, humidity is 81%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket draped over your skin, making travel feel a bit more sluggish and requiring plenty of water breaks to stay comfortable.

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 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
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.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)64 mm (2.5 inches)80%moderate
February Weather9°C (49°F)111 mm (4.4 inches)79%high
March Weather15°C (60°F)121 mm (4.8 inches)78%very high
April Weather18°C (65°F)138 mm (5.4 inches)78%very high
May Weather23°C (74°F)180 mm (7.1 inches)81%extreme
June Weather27°C (81°F)91 mm (3.6 inches)78%extreme
July Weather29°C (85°F)55 mm (2.2 inches)73%extreme
August Weather29°C (84°F)95 mm (3.7 inches)66%extreme
September Weather26°C (79°F)89 mm (3.5 inches)65%very high
October Weather20°C (68°F)148 mm (5.8 inches)72%very high
November Weather13°C (56°F)58 mm (2.3 inches)82%high
December Weather11°C (51°F)73 mm (2.9 inches)87%moderate

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