Last updated: June 24, 2025
In May, the average temperature in Rockville, United States hovers around 15°C (60°F), with minimums dropping to 1°C (34°F) and maximums soaring up to 34°C (94°F). Expect about 113 mm (4.5 in) of precipitation spread over 13 days, accompanied by a comfortable average humidity of 69%.
In May in Rockville, the average temperature is 15°C (60°F). The maximum can reach 34°C (94°F), while the minimum can be as low as 1°C (34°F). It's advisable to pack layers to accommodate the varied temperatures during your travels.
In Rockville in May, the precipitation amount is 113 mm (4.5 in) accumulated over 13 days.
In Rockville in May, humidity is 69%. With an average temperature of 15°C (60°F), this humidity feels like a cool, damp embrace that can make outdoor activities feel slightly heavier and more exhausting, but still inviting for exploring the charming sights and sounds of the area.
In Rockville 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 Rockville.
UV Risk Categories
Weather in Rockville varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Rockville, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -1°C (31°F) | 66 mm (2.6 inches) | 84% | moderate |
February Weather | 1°C (33°F) | 86 mm (3.4 inches) | 82% | moderate |
March Weather | 4°C (39°F) | 89 mm (3.5 inches) | 81% | high |
April Weather | 9°C (49°F) | 125 mm (4.9 inches) | 78% | very high |
May Weather | 15°C (60°F) | 113 mm (4.5 inches) | 69% | very high |
June Weather | 20°C (69°F) | 85 mm (3.4 inches) | 69% | very high |
July Weather | 24°C (75°F) | 144 mm (5.7 inches) | 62% | very high |
August Weather | 23°C (74°F) | 90 mm (3.5 inches) | 65% | very high |
September Weather | 19°C (67°F) | 98 mm (3.8 inches) | 68% | very high |
October Weather | 13°C (56°F) | 132 mm (5.2 inches) | 74% | high |
November Weather | 6°C (43°F) | 91 mm (3.6 inches) | 82% | moderate |
December Weather | 1°C (34°F) | 123 mm (4.9 inches) | 80% | low |