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Hourly Weather Forecast for Herndon, Virginia 20170 - The Weather Channel | Weather.com
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Hourly Weather-

As of 7:29 am EDT
alertLevel3

Small Craft Advisory

alertLevel3

There is a marginal risk of severe weather today.

Sunday, March 22

8 am

Partly Cloudy Day Partly Cloudy
48°
Rain drop 3%
SSE 2 mph
Subtract

Partly Cloudy

  • Temperature feels like
    Feels Like48°
  • WindSSE 2 mph
  • Humidity
    Humidity90%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover40%
  • Rain drop
    Rain Amount0 in

8:15 am

Partly Cloudy Day Partly Cloudy
49°
Rain drop 3%
SSE 3 mph

9 am

Partly Cloudy Day Partly Cloudy
52°
Rain drop 2%
S 4 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like52°
  • WindS 4 mph
  • Humidity
    Humidity84%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover47%
  • Rain drop
    Rain Amount0 in

10 am

Partly Cloudy Day Partly Cloudy
58°
Rain drop 2%
S 6 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like57°
  • WindS 6 mph
  • Humidity
    Humidity72%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover46%
  • Rain drop
    Rain Amount0 in

11 am

Partly Cloudy Day Partly Cloudy
63°
Rain drop 1%
S 7 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like63°
  • WindS 7 mph
  • Humidity
    Humidity63%
  • UV index
    UV Index3 of 11
  • Cloud
    Cloud Cover48%
  • Rain drop
    Rain Amount0 in

12 pm

Partly Cloudy Day Partly Cloudy
68°
Rain drop 1%
SSW 8 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like68°
  • WindSSW 8 mph
  • Humidity
    Humidity54%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover42%
  • Rain drop
    Rain Amount0 in

1 pm

Partly Cloudy Day Partly Cloudy
72°
Rain drop 0%
S 8 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like72°
  • WindS 8 mph
  • Humidity
    Humidity47%
  • UV index
    UV Index6 of 11
  • Cloud
    Cloud Cover36%
  • Rain drop
    Rain Amount0 in
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2 pm

Mostly Clear Day Mostly Sunny
76°
Rain drop 0%
SSW 10 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like76°
  • WindSSW 10 mph
  • Humidity
    Humidity40%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover25%
  • Rain drop
    Rain Amount0 in

3 pm

Mostly Clear Day Mostly Sunny
79°
Rain drop 0%
SSW 10 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like79°
  • WindSSW 10 mph
  • Humidity
    Humidity36%
  • UV index
    UV Index4 of 11
  • Cloud
    Cloud Cover23%
  • Rain drop
    Rain Amount0 in

4 pm

Mostly Clear Day Mostly Sunny
81°
Rain drop 0%
SSW 11 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like81°
  • WindSSW 11 mph
  • Humidity
    Humidity33%
  • UV index
    UV Index3 of 11
  • Cloud
    Cloud Cover29%
  • Rain drop
    Rain Amount0 in

5 pm

Partly Cloudy Day Partly Cloudy
82°
Rain drop 0%
SSW 11 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like82°
  • WindSSW 11 mph
  • Humidity
    Humidity32%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover42%
  • Rain drop
    Rain Amount0 in

6 pm

Partly Cloudy Day Partly Cloudy
81°
Rain drop 0%
SSW 10 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like81°
  • WindSSW 10 mph
  • Humidity
    Humidity32%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover36%
  • Rain drop
    Rain Amount0 in

7 pm

Partly Cloudy Day Partly Cloudy
78°
Rain drop 0%
SSW 10 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like78°
  • WindSSW 10 mph
  • Humidity
    Humidity37%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover50%
  • Rain drop
    Rain Amount0 in

8 pm

Partly Cloudy Night Partly Cloudy
75°
Rain drop 0%
SSW 9 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like75°
  • WindSSW 9 mph
  • Humidity
    Humidity41%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover56%
  • Rain drop
    Rain Amount0 in

9 pm

Mostly Cloudy Night Mostly Cloudy
72°
Rain drop 15%
SSW 9 mph
Add

Mostly Cloudy

  • Temperature feels like
    Feels Like72°
  • WindSSW 9 mph
  • Humidity
    Humidity46%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover66%
  • Rain drop
    Rain Amount0 in

10 pm

Mostly Cloudy Night Mostly Cloudy
71°
Rain drop 15%
SW 8 mph
Add

Mostly Cloudy

  • Temperature feels like
    Feels Like71°
  • WindSW 8 mph
  • Humidity
    Humidity50%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover73%
  • Rain drop
    Rain Amount0 in

11 pm

Mostly Cloudy Night Mostly Cloudy
69°
Rain drop 15%
W 8 mph
Add

Mostly Cloudy

  • Temperature feels like
    Feels Like69°
  • WindW 8 mph
  • Humidity
    Humidity55%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover70%
  • Rain drop
    Rain Amount0 in

Monday, March 23

12 am

Mostly Cloudy Night Mostly Cloudy
67°
Rain drop 15%
NW 6 mph
Add

Mostly Cloudy

  • Temperature feels like
    Feels Like67°
  • WindNW 6 mph
  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover73%
  • Rain drop
    Rain Amount0 in

1 am

Cloudy Cloudy
65°
Rain drop 15%
NNW 5 mph
Add

Cloudy

  • Temperature feels like
    Feels Like65°
  • WindNNW 5 mph
  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover81%
  • Rain drop
    Rain Amount0 in
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2 am

Cloudy Cloudy
64°
Rain drop 20%
N 6 mph
Add

Cloudy

  • Temperature feels like
    Feels Like64°
  • WindN 6 mph
  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover80%
  • Rain drop
    Rain Amount0 in

3 am

Scattered Thunderstorms Night Scattered Thunderstorms
62°
Rain drop 50%
N 6 mph
Add

Scattered Thunderstorms

  • Temperature feels like
    Feels Like62°
  • WindN 6 mph
  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover92%
  • Rain drop
    Rain Amount0.03 in

4 am

Scattered Thunderstorms Night Scattered Thunderstorms
61°
Rain drop 59%
NNW 7 mph
Add

Scattered Thunderstorms

  • Temperature feels like
    Feels Like61°
  • WindNNW 7 mph
  • Humidity
    Humidity77%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover100%
  • Rain drop
    Rain Amount0.03 in

5 am

Thunderstorms Thunderstorms
60°
Rain drop 92%
NNW 9 mph
Add

Thunderstorms

  • Temperature feels like
    Feels Like58°
  • WindNNW 9 mph
  • Humidity
    Humidity80%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover100%
  • Rain drop
    Rain Amount0.07 in

6 am

Thunderstorms Thunderstorms
58°
Rain drop 92%
N 9 mph
Add

Thunderstorms

  • Temperature feels like
    Feels Like57°
  • WindN 9 mph
  • Humidity
    Humidity83%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover100%
  • Rain drop
    Rain Amount0.07 in

7 am

Showers Showers
56°
Rain drop 46%
N 7 mph
Add

Showers

  • Temperature feels like
    Feels Like55°
  • WindN 7 mph
  • Humidity
    Humidity85%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover99%
  • Rain drop
    Rain Amount0.02 in

8 am

Showers Showers
56°
Rain drop 39%
NNW 7 mph
Add

Showers

  • Temperature feels like
    Feels Like54°
  • WindNNW 7 mph
  • Humidity
    Humidity87%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover96%
  • Rain drop
    Rain Amount0.01 in

9 am

Cloudy Cloudy
55°
Rain drop 24%
NNW 9 mph
Add

Cloudy

  • Temperature feels like
    Feels Like52°
  • WindNNW 9 mph
  • Humidity
    Humidity86%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover88%
  • Rain drop
    Rain Amount0 in

10 am

Cloudy Cloudy
54°
Rain drop 24%
NNW 13 mph
Add

Cloudy

  • Temperature feels like
    Feels Like51°
  • WindNNW 13 mph
  • Humidity
    Humidity78%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover90%
  • Rain drop
    Rain Amount0 in

11 am

Cloudy Cloudy
54°
Rain drop 21%
NNW 15 mph
Add

Cloudy

  • Temperature feels like
    Feels Like50°
  • WindNNW 15 mph
  • Humidity
    Humidity71%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover89%
  • Rain drop
    Rain Amount0 in

12 pm

Partly Cloudy Day Partly Cloudy
55°
Rain drop 15%
NNW 16 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like51°
  • WindNNW 16 mph
  • Humidity
    Humidity60%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover54%
  • Rain drop
    Rain Amount0 in

1 pm

Partly Cloudy Day Partly Cloudy
56°
Rain drop 15%
NNW 16 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like52°
  • WindNNW 16 mph
  • Humidity
    Humidity51%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover50%
  • Rain drop
    Rain Amount0 in
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2 pm

Partly Cloudy Day Partly Cloudy
56°
Rain drop 15%
NW 18 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like51°
  • WindNW 18 mph
  • Humidity
    Humidity46%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover42%
  • Rain drop
    Rain Amount0 in

3 pm

Partly Cloudy Day Partly Cloudy
55°
Rain drop 15%
NW 17 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like51°
  • WindNW 17 mph
  • Humidity
    Humidity42%
  • UV index
    UV Index4 of 11
  • Cloud
    Cloud Cover31%
  • Rain drop
    Rain Amount0 in

4 pm

Mostly Clear Day Mostly Sunny
55°
Rain drop 15%
NW 18 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like50°
  • WindNW 18 mph
  • Humidity
    Humidity39%
  • UV index
    UV Index3 of 11
  • Cloud
    Cloud Cover29%
  • Rain drop
    Rain Amount0 in

5 pm

Sunny Sunny
54°
Rain drop 0%
NW 17 mph
Add

Sunny

  • Temperature feels like
    Feels Like49°
  • WindNW 17 mph
  • Humidity
    Humidity38%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover7%
  • Rain drop
    Rain Amount0 in

6 pm

Sunny Sunny
53°
Rain drop 0%
NW 17 mph
Add

Sunny

  • Temperature feels like
    Feels Like48°
  • WindNW 17 mph
  • Humidity
    Humidity37%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover4%
  • Rain drop
    Rain Amount0 in

7 pm

Sunny Sunny
50°
Rain drop 0%
NW 14 mph
Add

Sunny

  • Temperature feels like
    Feels Like45°
  • WindNW 14 mph
  • Humidity
    Humidity38%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover4%
  • Rain drop
    Rain Amount0 in

8 pm

Clear Night Clear
47°
Rain drop 1%
NNW 12 mph
Add

Clear

  • Temperature feels like
    Feels Like42°
  • WindNNW 12 mph
  • Humidity
    Humidity40%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover4%
  • Rain drop
    Rain Amount0 in

9 pm

Mostly Clear Night Mostly Clear
45°
Rain drop 1%
NNW 12 mph
Add

Mostly Clear

  • Temperature feels like
    Feels Like39°
  • WindNNW 12 mph
  • Humidity
    Humidity42%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover23%
  • Rain drop
    Rain Amount0 in

10 pm

Clear Night Clear
43°
Rain drop 1%
NNW 11 mph
Add

Clear

  • Temperature feels like
    Feels Like37°
  • WindNNW 11 mph
  • Humidity
    Humidity44%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover15%
  • Rain drop
    Rain Amount0 in

11 pm

Partly Cloudy Night Partly Cloudy
42°
Rain drop 1%
NNW 12 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like35°
  • WindNNW 12 mph
  • Humidity
    Humidity46%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover33%
  • Rain drop
    Rain Amount0 in

Tuesday, March 24

12 am

Partly Cloudy Night Partly Cloudy
40°
Rain drop 1%
NNW 11 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like33°
  • WindNNW 11 mph
  • Humidity
    Humidity47%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover40%
  • Rain drop
    Rain Amount0 in

1 am

Clear Night Clear
39°
Rain drop 1%
NNW 10 mph
Add

Clear

  • Temperature feels like
    Feels Like32°
  • WindNNW 10 mph
  • Humidity
    Humidity48%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover19%
  • Mixed precipitation
    Precip Amount0 in
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2 am

Partly Cloudy Night Partly Cloudy
38°
Rain drop 2%
NNW 9 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like31°
  • WindNNW 9 mph
  • Humidity
    Humidity49%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover45%
  • Mixed precipitation
    Precip Amount0 in

3 am

Mostly Clear Night Mostly Clear
36°
Rain drop 2%
NNW 9 mph
Add

Mostly Clear

  • Temperature feels like
    Feels Like29°
  • WindNNW 9 mph
  • Humidity
    Humidity51%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover23%
  • Mixed precipitation
    Precip Amount0 in

4 am

Mostly Clear Night Mostly Clear
35°
Rain drop 2%
NNW 8 mph
Add

Mostly Clear

  • Temperature feels like
    Feels Like29°
  • WindNNW 8 mph
  • Humidity
    Humidity52%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover21%
  • Mixed precipitation
    Precip Amount0 in

5 am

Clear Night Clear
34°
Rain drop 3%
NNW 7 mph
Add

Clear

  • Temperature feels like
    Feels Like28°
  • WindNNW 7 mph
  • Humidity
    Humidity54%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover17%
  • Mixed precipitation
    Precip Amount0 in

6 am

Partly Cloudy Night Partly Cloudy
33°
Rain drop 3%
NNW 7 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like27°
  • WindNNW 7 mph
  • Humidity
    Humidity57%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover31%
  • Mixed precipitation
    Precip Amount0 in

7 am

Partly Cloudy Night Partly Cloudy
33°
Rain drop 3%
NNW 6 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like27°
  • WindNNW 6 mph
  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover35%
  • Mixed precipitation
    Precip Amount0 in
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