Weather in Rockville in May
Rockville, United States averages a high of 22.7°C (72.9°F) and low of 12.4°C (54.3°F) in May, with 11 rain days and 10.2 hours of daily sunshine. Travel score: 79.1/100 (Good). The best time to visit Rockville is September.
High
23°C73°F
Low
12°C54°F
🌧️
11
rain days
☀️
10.2
hrs/day sunshine
💧
70%
humidity
79— Good
May in Rockville is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Rockville?
How much does it rain in Rockville in May?
Rockville receives an average of 99.8mm of rainfall across 11 rainy days in May. The annual total is 1108.6mm.
What should I pack for Rockville in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 23°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (11 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31