Last updated: June 24, 2025
In May, the average temperature in Saint Paul, United States hovers around 20°C (68°F), making it a pleasant time to explore. However, prepare for a range of temperatures, with minimums dipping to 4°C (40°F) and maximums soaring to 34°C (93°F). This month also brings 230 mm (9.1 in) of precipitation spread over 15 days, resulting in an average humidity of 83%—perfect for lush landscapes but a little sticky for outdoor activities!
In May in Saint Paul, the average temperature is 20°C (68°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 4°C (40°F). This variety in temperature makes it a great time for travelers to enjoy both outdoor activities and cozy indoor experiences.
In Saint Paul in May, the total precipitation amount is 230 mm (9.1 in) over the course of 15 days.
In Saint Paul in May humidity is 83%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket enveloping you, making it feel much warmer than it is. Traveling in such conditions can be quite taxing, as the air feels thick, often leading to a sense of exhaustion and requiring frequent breaks to seek shade or hydration.
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 | 2°C (36°F) | 62 mm (2.4 inches) | 77% | moderate |
| February Weather | 3°C (37°F) | 58 mm (2.3 inches) | 76% | moderate |
| March Weather | 10°C (50°F) | 113 mm (4.4 inches) | 71% | high |
| April Weather | 14°C (57°F) | 114 mm (4.5 inches) | 73% | very high |
| May Weather | 20°C (68°F) | 230 mm (9.1 inches) | 83% | very high |
| June Weather | 26°C (78°F) | 108 mm (4.2 inches) | 83% | extreme |
| July Weather | 27°C (81°F) | 104 mm (4.1 inches) | 81% | extreme |
| August Weather | 26°C (79°F) | 126 mm (5.0 inches) | 73% | very high |
| September Weather | 23°C (74°F) | 82 mm (3.2 inches) | 67% | very high |
| October Weather | 15°C (60°F) | 133 mm (5.2 inches) | 72% | high |
| November Weather | 8°C (47°F) | 43 mm (1.7 inches) | 82% | moderate |
| December Weather | 5°C (42°F) | 35 mm (1.4 inches) | 85% | moderate |