HERNDON, VA 20171 Weather Forecast & Current Conditions

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WASH-DULLES, VA
Current Weather

1:52 PM EDT SEP 2, 2025
Broken Clouds
75°F
Feels Like: 75°F
Dewpoint: 48°F
Rel. Hum.: 38%
Visibility: 10 miles
Wind: Variable at 6 mph
Pressure: 30.11 inches
Last 72 hours

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HERNDON, VA 20171
Weather Forecast

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Snow Depth pages
THIS AFTERNOON
Partly sunny. Highs in the upper 70s. Northeast winds around 5 mph.
TONIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 50s. Southeast winds around 5 mph in the evening, becoming light and variable.
WEDNESDAY
Sunny. Highs in the lower 80s. Light and variable winds, becoming south around 5 mph in the afternoon.
WEDNESDAY NIGHT
Mostly clear. Lows in the lower 60s. South winds around 5 mph.
THURSDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.
THURSDAY NIGHT
Mostly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 40 percent.
FRIDAY
Sunny. Highs in the upper 80s.
FRIDAY NIGHT
Partly cloudy. Lows in the upper 60s.
SATURDAY
Mostly sunny with a chance of showers. Highs in the upper 80s. Chance of rain 40 percent.
SATURDAY NIGHT
Mostly cloudy with a 40 percent chance of showers. Lows in the lower 60s.
SUNDAY
Mostly sunny. Highs in the upper 70s.
SUNDAY NIGHT
Partly cloudy. Lows in the mid 50s.
MONDAY
Sunny. Highs in the upper 70s.

Visible Weather Satellite
HERNDON, VA 20171
Infrared Weather Satellite
HERNDON, VA 20171
NEXRAD Weather Radar
HERNDON, VA 20171

WASH-DULLES, VA 3 hourly weather forecast

weather forecast created  7:00 AM CDT  9/ 2/2025
Tuesday
2 SEP 2025
HERNDON, VA 20171 weather forecast Day 1, 12 hours 2 PM 76° 78° Partly Cloudy 0%

0% Thunder
( 2% severe)
NE   5 42% 51°
High 77° HERNDON, VA 20171 weather forecast Day 1, 15 hours 5 PM 76° 78° Partly Cloudy NE   5 40% 50°
Partly Cloudy



HERNDON, VA 20171 weather forecast Day 1, 18 hours 8 PM 69° 69° Partly Cloudy 0%

0% Thunder
( 1% severe)
ESE   3 53% 51°
HERNDON, VA 20171 weather forecast Day 1, 21 hours 11 PM 63° 64° Partly Cloudy S   1 70% 53°
Wednesday
3 SEP 2025
HERNDON, VA 20171 weather forecast Day 2, 0 hours 2 AM 58° 59° Clear 0%

0% Thunder
( 0% severe)
WSW   1 87% 54°
Low 53° HERNDON, VA 20171 weather forecast Day 2, 3 hours 5 AM 56° 56° Partly Cloudy   CALM 90% 53°
High 81° HERNDON, VA 20171 weather forecast Day 2, 6 hours 8 AM 60° 61° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 84% 55°

Partly Cloudy



HERNDON, VA 20171 weather forecast Day 2, 9 hours 11 AM 73° 73° Partly Cloudy SSE   2 51% 54°
HERNDON, VA 20171 weather forecast Day 2, 12 hours 2 PM 79° 79° Partly Cloudy 3%

0% Thunder
( 3% severe)
S   5 39% 52°
HERNDON, VA 20171 weather forecast Day 2, 15 hours 5 PM 79° 79° Partly Cloudy S   6 38% 51°
HERNDON, VA 20171 weather forecast Day 2, 18 hours 8 PM 72° 72° Partly Cloudy 1%

0% Thunder
( 3% severe)
SSE   7 49% 52°
HERNDON, VA 20171 weather forecast Day 2, 21 hours 11 PM 68° 68° Partly Cloudy SSE   7 63% 55°
Thursday
4 SEP 2025
HERNDON, VA 20171 weather forecast Day 3, 0 hours 2 AM 65° 65° Partly Cloudy 1%

0% Thunder
( 1% severe)
S   7 73% 56°
Low 60° HERNDON, VA 20171 weather forecast Day 3, 3 hours 5 AM 63° 63° Partly Cloudy S   7 81% 57°
High 84° HERNDON, VA 20171 weather forecast Day 3, 6 hours 8 AM 65° 65° Partly Cloudy 1%

0% Thunder
( 1% severe)
S   8 78% 58°

Partly Cloudy

Chance of Rain

HERNDON, VA 20171 weather forecast Day 3, 9 hours 11 AM 76° 78° Clear S   12 56% 59°
HERNDON, VA 20171 weather forecast Day 3, 15 hours 2 PM 83° 83° Partly Cloudy 39%
RAIN
.5–1 in
0% Thunder
( 26% severe)
SSW   14 43% 58°
HERNDON, VA 20171 weather forecast Day 3, 18 hours 5 PM 81° 81° Mostly Cloudy SSW   14 47% 59°
HERNDON, VA 20171 weather forecast Day 3, 21 hours 8 PM 73° 73° Mostly Cloudy     SSW   9 66% 61°

WASH-DULLES, VA extended weather forecast

Friday
5 SEP 2025
Saturday
6 SEP 2025
Sunday
7 SEP 2025
Monday
8 SEP 2025
Tuesday
9 SEP 2025
Low 63° Low 66° Low 55° Low 52° Low 58°
High 86° High 84° High 80° High 78° High 78°
HERNDON, VA 20171 weather forecast Day 4 HERNDON, VA 20171 weather forecast Day 5 HERNDON, VA 20171 weather forecast Day 6 HERNDON, VA 20171 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Mostly Cloudy
40% Rain
Overcast
38% Rain
Mostly Cloudy
24% Rain
Partly Cloudy
14% Rain
Mostly Cloudy
34% Rain
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