Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Ashburn Weather in September
Ashburn in September averages 27°C (81°F) during the day and 15°C (59°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Ashburn in September
Records from the past 30 years suggest around 10 days of rain, with 99 mm (3.9 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Ashburn in September
Ashburn has excellent weather in September, with days reaching 27°C (81°F) and nights cooling to 15°C (59°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 15°C (59°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Ashburn in September
Enjoy a sunny month with about 225 hours of sunshine, the clear skies make Ashburn even more beautiful.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Ashburn.
Ashburn Temperature in September
Min Temperature
15°C (59°F)
Max Temperature
27°C (81°F)
Chance of Rain
33%
Precipitation
99 mm (3.9 in)
Rainy days
10 days
Humidity
68% *
Sunshine
225 hours *
Percentage Sunshine
60% *
* Data from: Washington DC, the United States of America (44 KM, 27 Miles).
Ashburn Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ashburn - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Ashburn in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Ashburn in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
Ashburn 3-Day Forecast
More climate data for Ashburn
Temperature Rainfall Sunshine Humidity
See the full Ashburn climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
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Yosemite National Park is definitely worth a visit
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