Weather in Gaithersburg in May
Gaithersburg, United States averages a high of 22.6°C (72.7°F) and low of 12.3°C (54.1°F) in May, with 12 rain days and 10.3 hours of daily sunshine. Travel score: 78.9/100 (Good). The best time to visit Gaithersburg is September.
High
23°C73°F
Low
12°C54°F
🌧️
12
rain days
☀️
10.3
hrs/day sunshine
💧
70%
humidity
79— Good
May in Gaithersburg is warm and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Gaithersburg?
How much does it rain in Gaithersburg in May?
Gaithersburg receives an average of 99.3mm of rainfall across 12 rainy days in May. The annual total is 1105.9mm.
What should I pack for Gaithersburg 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 (12 days)
☔
Umbrella
Be prepared for occasional showers
🎉Visiting United States in May?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31