Weather in Downtown DC in September
Downtown DC, United States averages a high of 26°C (78.8°F) and low of 16.9°C (62.4°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 Downtown DC is September.
High
26°C79°F
Low
17°C62°F
🌧️
9
rain days
☀️
9.2
hrs/day sunshine
💧
72%
humidity
84— Excellent
September in Downtown DC is warm and occasionally wet — excellent conditions for exploring.
What are the average temperatures in Downtown DC?
How much does it rain in Downtown DC in September?
Downtown DC receives an average of 113.9mm of rainfall across 9 rainy days in September. The annual total is 1110.7mm.
What should I pack for Downtown DC 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
🎉Visiting United States in September?
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Data based on 1994–2024 averages · Last updated: 2024-12-31