Last updated: June 24, 2025
In May, the average temperature in Saint Paul, United States is a mild 16°C (61°F). However, temperatures can range significantly, dipping to a chilly 0°C (32°F) at the lowest and soaring up to a balmy 35°C (96°F) at the highest. Expect some rain, with 144 mm (5.7 in) of precipitation spread over about 13 days, contributing to an average humidity level of 80%.
In May in Saint Paul, the average temperature is 16°C (61°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as 0°C (32°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit.
In Saint Paul in May, the precipitation amount is 144 mm (5.7 in) spread over 13 days.
In Saint Paul in May, humidity is 80%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapped around you, making sightseeing a sweat-inducing challenge but also lending a lush vibrancy to the surroundings that can enhance your travel experience.
In Saint Paul 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 Saint Paul.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 25 mm (1.0 inches) | 73% | moderate |
| February Weather | -4°C (25°F) | 18 mm (0.7 inches) | 81% | moderate |
| March Weather | 4°C (40°F) | 86 mm (3.4 inches) | 69% | high |
| April Weather | 9°C (49°F) | 56 mm (2.2 inches) | 71% | very high |
| May Weather | 16°C (61°F) | 144 mm (5.7 inches) | 80% | very high |
| June Weather | 23°C (74°F) | 85 mm (3.3 inches) | 83% | extreme |
| July Weather | 25°C (77°F) | 66 mm (2.6 inches) | 84% | very high |
| August Weather | 23°C (74°F) | 84 mm (3.3 inches) | 84% | very high |
| September Weather | 20°C (68°F) | 57 mm (2.2 inches) | 77% | very high |
| October Weather | 10°C (51°F) | 88 mm (3.5 inches) | 72% | high |
| November Weather | 4°C (40°F) | 21 mm (0.8 inches) | 80% | moderate |
| December Weather | -1°C (30°F) | 41 mm (1.6 inches) | 79% | moderate |