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10-Day Weather Forecast for Herndon, Virginia 20170 - The Weather Channel | weather.com
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10 Day Weather-

As of 10:47 pm EDT
alertLevel3

Small Craft Advisory

alertLevel3

There is a marginal risk of severe weather tonight.

Tonight

Rain Rain Late
--/47°
Rain drop 100%
Subtract

Night

47°
Rain
Rain drop
100%
WSW 18 mph

Cloudy with occasional rain late. Low 47F. Winds WSW at 15 to 25 mph. Chance of rain 100%.

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  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:50 am
  • Moonset
    Moonset11:40 am
  • Moon Phase - Day 22 Last Quarter

Thu 12

Rain, Snow, Wintery Mix Rain/Snow
53°/28°
Rain drop 99%
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Day

53°
Rain, Snow, Wintery Mix
Rain drop
99%
NW 18 mph

Cloudy with rain and snow. Much cooler. High 53F. Winds NW at 15 to 25 mph. Chance of rain 100%.

  • Humidity
    Humidity74%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise7:25 am
  • Sunset
    Sunset7:13 pm

Night

28°
Clear Night
Mixed precipitation
3%
W 11 mph

Clear skies. Low 28F. Winds W at 10 to 15 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:42 am
  • Moonset
    Moonset12:34 pm
  • Moon Phase - Day 23 Waning Crescent

Fri 13

Partly Cloudy Day AM Clouds/PM Sun/Wind
57°/41°
Rain drop 4%
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Day

57°
Partly Cloudy Day
Rain drop
4%
S 21 mph

Cloudy early then partly cloudy and windy later in the day. High 57F. Winds S at 20 to 30 mph. Higher wind gusts possible.

  • Humidity
    Humidity46%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:24 am
  • Sunset
    Sunset7:14 pm

Night

41°
Partly Cloudy Night
Rain drop
1%
WSW 16 mph

Some clouds early will give way to generally clear conditions overnight. Low 41F. Winds WSW at 10 to 20 mph.

  • Humidity
    Humidity43%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:27 am
  • Moonset
    Moonset1:34 pm
  • Moon Phase - Day 24 Waning Crescent

Sat 14

Partly Cloudy Day Partly Cloudy
58°/41°
Rain drop 1%
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Day

58°
Partly Cloudy Day
Rain drop
1%
NW 10 mph

Intervals of clouds and sunshine. High 58F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity32%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:22 am
  • Sunset
    Sunset7:15 pm

Night

41°
Mostly Cloudy Night
Rain drop
1%
E 6 mph

Partly cloudy skies early will become overcast later during the night. Low 41F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity43%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:07 am
  • Moonset
    Moonset2:38 pm
  • Moon Phase - Day 25 Waning Crescent

Sun 15

Mostly Cloudy Day Mostly Cloudy
59°/54°
Rain drop 18%
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Day

59°
Mostly Cloudy Day
Rain drop
18%
SE 13 mph

More clouds than sun. Slight chance of a rain shower. High 59F. Winds SE at 10 to 15 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise7:21 am
  • Sunset
    Sunset7:16 pm

Night

54°
Showers
Rain drop
66%
SE 11 mph

Cloudy skies with periods of light rain after midnight. Low 54F. Winds SE at 10 to 15 mph. Chance of rain 70%.

  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:40 am
  • Moonset
    Moonset3:46 pm
  • Moon Phase - Day 26 Waning Crescent

Mon 16

Showers Thundershowers
63°/27°
Rain drop 87%
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Day

63°
Showers
Rain drop
87%
SW 16 mph

Showers and thundershowers likely. Morning high of 63F with temps falling to near 50. Winds SW at 10 to 20 mph. Chance of rain 90%.

  • Humidity
    Humidity80%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise7:19 am
  • Sunset
    Sunset7:17 pm

Night

27°
Scattered Showers Night
Rain drop
58%
WNW 15 mph

Showers in the evening, then partly cloudy overnight. Low 27F. Winds WNW at 10 to 20 mph. Chance of rain 60%.

  • Humidity
    Humidity56%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:08 am
  • Moonset
    Moonset4:53 pm
  • Moon Phase - Day 27 Waning Crescent

Tue 17

Partly Cloudy Day Partly Cloudy
36°/21°
Rain drop 3%
Add

Day

36°
Partly Cloudy Day
Mixed precipitation
3%
WNW 14 mph

Sunshine and clouds mixed. Cold. High 36F. Winds WNW at 10 to 20 mph.

  • Humidity
    Humidity42%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:17 am
  • Sunset
    Sunset7:18 pm

Night

21°
Mostly Clear Night
NW 10 mph

Clear skies. Low 21F. Winds NW at 5 to 10 mph.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:33 am
  • Moonset
    Moonset6:02 pm
  • Moon Phase - Day 28 Waning Crescent

Wed 18

Mostly Clear Day Mostly Sunny
41°/29°
Rain drop 0%
Add

Day

41°
Mostly Clear Day
WSW 7 mph

Sunny along with a few clouds. High 41F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity45%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:16 am
  • Sunset
    Sunset7:19 pm

Night

29°
Partly Cloudy Night
Mixed precipitation
3%
ESE 6 mph

Partly cloudy early with increasing clouds overnight. Low 29F. Winds light and variable.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:58 am
  • Moonset
    Moonset7:11 pm
  • Moon Phase - Day 29 New Moon

Thu 19

Partly Cloudy Day Partly Cloudy
57°/36°
Rain drop 6%
Add

Day

57°
Partly Cloudy Day
Rain drop
6%
SE 8 mph

Intervals of clouds and sunshine in the morning with more clouds for later in the day. High 57F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:14 am
  • Sunset
    Sunset7:20 pm

Night

36°
Partly Cloudy Night
Mixed precipitation
22%
SSE 7 mph

Partly cloudy. Low 36F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:22 am
  • Moonset
    Moonset8:22 pm
  • Moon Phase - Day 0 New Moon

Fri 20

Mostly Cloudy Day Mostly Cloudy
63°/43°
Rain drop 22%
Add

Day

63°
Mostly Cloudy Day
Rain drop
22%
S 9 mph

Considerable cloudiness. High 63F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:21 pm

Night

43°
Mostly Cloudy Night
Rain drop
11%
WSW 8 mph

Mainly cloudy. Low 43F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:48 am
  • Moonset
    Moonset9:36 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Partly Cloudy Day Partly Cloudy
64°/37°
Rain drop 11%
Add

Day

64°
Partly Cloudy Day
Rain drop
11%
NW 10 mph

Partly cloudy. High 64F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:11 am
  • Sunset
    Sunset7:22 pm

Night

37°
Partly Cloudy Night
Mixed precipitation
11%
NW 9 mph

Partly cloudy. Low 37F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:17 am
  • Moonset
    Moonset10:52 pm
  • Moon Phase - Day 3 Waxing Crescent

Sun 22

Partly Cloudy Day Partly Cloudy
59°/38°
Rain drop 9%
Add

Day

59°
Partly Cloudy Day
Rain drop
9%
NW 9 mph

Partly cloudy skies. High 59F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:23 pm

Night

38°
Partly Cloudy Night
Mixed precipitation
14%
NNW 8 mph

Partly cloudy skies. Low 38F. Winds NNW at 5 to 10 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:51 am
  • Moonset
    Moonset--
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Partly Cloudy Day Partly Cloudy
58°/40°
Rain drop 15%
Add

Day

58°
Partly Cloudy Day
Rain drop
15%
NW 8 mph

Partly cloudy. High 58F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:08 am
  • Sunset
    Sunset7:24 pm

Night

40°
Partly Cloudy Night
Rain drop
14%
SSE 6 mph

Partly cloudy. Low near 40F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:34 am
  • Moonset
    Moonset12:09 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Partly Cloudy Day Partly Cloudy
61°/42°
Rain drop 14%
Add

Day

61°
Partly Cloudy Day
Rain drop
14%
NW 8 mph

Intervals of clouds and sunshine. High 61F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity62%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:25 pm

Night

42°
Partly Cloudy Night
Rain drop
15%
NNE 7 mph

Partly cloudy. Low 42F. Winds NNE at 5 to 10 mph.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:26 am
  • Moonset
    Moonset1:24 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Scattered Showers Day PM Showers
58°/40°
Rain drop 32%
Add

Day

58°
Scattered Showers Day
Rain drop
32%
N 9 mph

Mostly cloudy skies with a few showers later in the day. High 58F. Winds N at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity65%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:05 am
  • Sunset
    Sunset7:26 pm

Night

40°
Showers
Rain drop
43%
NE 8 mph

Considerable cloudiness with occasional rain showers. Low around 40F. Winds NE at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:29 am
  • Moonset
    Moonset2:30 am
  • Moon Phase - Day 7 First Quarter
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