Weather in Bethesda in September
Bethesda, United States averages a high of 25.5°C (77.9°F) and low of 16.6°C (61.9°F) in September, with 9 rain days and 9.2 hours of daily sunshine. Travel score: 83.6/100 (Excellent). The best time to visit Bethesda is September.
High
26°C78°F
Low
17°C62°F
🌧️
9
rain days
☀️
9.2
hrs/day sunshine
💧
72%
humidity
84— Excellent
September in Bethesda is warm and occasionally wet — excellent conditions for exploring.
What are the average temperatures in Bethesda?
How much does it rain in Bethesda in September?
Bethesda receives an average of 113mm of rainfall across 9 rainy days in September. The annual total is 1114.8mm.
What should I pack for Bethesda in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (9 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in September?
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