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10-day weather forecast for Herndon, Virginia 20170, United States - The Weather Channel | weather.com
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10-Day Weather- Herndon, Virginia, United States

As of 00:59 EST
alertLevel2

Gale Warning

+2 More

Tonight

Windy Partly Cloudy / Wind
--/-3°
Rain drop 22%
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Night

-3°
Windy
Mixed precipitation
22%
WNW 33 km/h

Windy and partly cloudy. Low -3°C. Winds WNW at 30 to 50 km/h. Winds could occasionally gust over 65 km/h.

  • Humidity
    Humidity46%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:41
  • Moonset
    Moonset01:58
  • Moon Phase - Day 9 Waxing Gibbous

Tue 30

Mostly Clear Day Mostly Sunny
1°/-4°
Rain drop 0%
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Day

1°
Mostly Clear Day
WNW 32 km/h

Generally clear. High 1°C. Winds WNW at 25 to 40 km/h. Winds could occasionally gust over 65 km/h.

  • Humidity
    Humidity40%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:27
  • Sunset
    Sunset16:56

Night

-4°
Mostly Cloudy Night
W 20 km/h

Mostly cloudy. Low -4°C. Winds W at 15 to 25 km/h.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise13:15
  • Moonset
    Moonset03:13
  • Moon Phase - Day 10 Waxing Gibbous

Wed 31

Partly Cloudy Day Partly Cloudy
4°/-2°
Rain drop 0%
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Day

4°
Partly Cloudy Day
WSW 16 km/h

Partly cloudy. High 4°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity46%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:27
  • Sunset
    Sunset16:57

Night

-2°
Partly Cloudy Night
Mixed precipitation
12%
WSW 18 km/h

Partly cloudy. Low -2°C. Winds WSW at 15 to 25 km/h.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise13:59
  • Moonset
    Moonset04:32
  • Moon Phase - Day 11 Waxing Gibbous

Thu 01

Partly Cloudy Day Partly Cloudy
0°/-7°
Rain drop 15%
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Day

0°
Partly Cloudy Day
Mixed precipitation
15%
NW 23 km/h

Partly cloudy. A few flurries or snow showers possible. High 0°C. Winds NW at 15 to 30 km/h.

  • Humidity
    Humidity40%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset16:58

Night

-7°
Mostly Clear Night
NW 12 km/h

Generally clear. Low -7°C. Winds NW at 10 to 15 km/h.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise14:54
  • Moonset
    Moonset05:49
  • Moon Phase - Day 13 Waxing Gibbous

Fri 02

Partly Cloudy Day Partly Cloudy
4°/-2°
Rain drop 0%
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Day

4°
Partly Cloudy Day
SW 10 km/h

Partly cloudy. High 4°C. Winds SW at 10 to 15 km/h.

  • Humidity
    Humidity46%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset16:59

Night

-2°
Partly Cloudy Night
Mixed precipitation
6%
NNW 9 km/h

Partly cloudy. Low -2°C. Winds light and variable.

  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise16:01
  • Moonset
    Moonset07:00
  • Moon Phase - Day 14 Full

Sat 03

Mostly Cloudy Day Mostly Cloudy
4°/-6°
Rain drop 6%
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Day

4°
Mostly Cloudy Day
Mixed precipitation
6%
NNW 14 km/h

Mostly cloudy. High 4°C. Winds NNW at 10 to 15 km/h.

  • Humidity
    Humidity46%
  • UV index
    UV Index1 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset16:59

Night

-6°
Partly Cloudy Night
Snowflake
7%
N 8 km/h

Partly cloudy. Low -6°C. Winds light and variable.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise17:16
  • Moonset
    Moonset07:59
  • Moon Phase - Day 15 Full

Sun 04

Partly Cloudy Day Partly Cloudy
4°/-3°
Rain drop 3%
Add

Day

4°
Partly Cloudy Day
Mixed precipitation
3%
NW 11 km/h

Partly cloudy. High 4°C. Winds NW at 10 to 15 km/h.

  • Humidity
    Humidity51%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset17:00

Night

-3°
Mostly Cloudy Night
Mixed precipitation
9%
SSE 7 km/h

Mostly cloudy. Low -3°C. Winds light and variable.

  • Humidity
    Humidity58%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise18:34
  • Moonset
    Moonset08:46
  • Moon Phase - Day 16 Waning Gibbous

Mon 05

Cloudy Cloudy
5°/-2°
Rain drop 10%
Add

Day

5°
Cloudy
Rain drop
10%
S 14 km/h

Cloudy. High 5°C. Winds S at 10 to 15 km/h.

  • Humidity
    Humidity59%
  • UV index
    UV Index1 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset17:01

Night

-2°
Mostly Cloudy Night
Mixed precipitation
12%
W 9 km/h

Mostly cloudy. Low -2°C. Winds light and variable.

  • Humidity
    Humidity71%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise19:48
  • Moonset
    Moonset09:22
  • Moon Phase - Day 17 Waning Gibbous

Tue 06

Partly Cloudy Day Partly Cloudy
4°/-3°
Rain drop 6%
Add

Day

4°
Partly Cloudy Day
Mixed precipitation
6%
NW 18 km/h

Partly cloudy. High 4°C. Winds NW at 15 to 25 km/h.

  • Humidity
    Humidity59%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset17:02

Night

-3°
Partly Cloudy Night
Mixed precipitation
6%
NW 14 km/h

Partly cloudy. Low -3°C. Winds NW at 10 to 15 km/h.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise20:59
  • Moonset
    Moonset09:52
  • Moon Phase - Day 18 Waning Gibbous

Wed 07

Partly Cloudy Day Partly Cloudy
3°/-4°
Rain drop 14%
Add

Day

3°
Partly Cloudy Day
Mixed precipitation
14%
NW 14 km/h

Partly cloudy. High 3°C. Winds NW at 10 to 15 km/h.

  • Humidity
    Humidity56%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset17:03

Night

-4°
Mostly Cloudy Night
Mixed precipitation
24%
N 11 km/h

Mostly cloudy. Low -4°C. Winds N at 10 to 15 km/h.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise22:05
  • Moonset
    Moonset10:17
  • Moon Phase - Day 19 Waning Gibbous

Thu 08

Rain, Snow, Wintery Mix PM Rain / Snow Showers
3°/-4°
Rain drop 49%
Add

Day

3°
Rain, Snow, Wintery Mix
Mixed precipitation
49%
NW 18 km/h

Rain and snow showers in the afternoon. High 3°C. Winds NW at 15 to 25 km/h. Chance of precip 50%. Snow accumulations less than 2 cm.

  • Humidity
    Humidity59%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset17:04

Night

-4°
Snow Showers
Snowflake
44%
NNW 14 km/h

Snow showers. Low -4°C. Winds NNW at 10 to 15 km/h. Chance of snow 40%. Snowfall of 3-7 cm.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise23:08
  • Moonset
    Moonset10:40
  • Moon Phase - Day 20 Waning Gibbous

Fri 09

Snow Showers AM Snow Showers
3°/-4°
Rain drop 38%
Add

Day

3°
Snow Showers
Snowflake
38%
NW 17 km/h

Morning snow showers. High 3°C. Winds NW at 15 to 25 km/h. Chance of snow 40%.

  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:28
  • Sunset
    Sunset17:05

Night

-4°
Partly Cloudy Night
Mixed precipitation
24%
WSW 12 km/h

Partly cloudy. Low -4°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset11:01
  • Moon Phase - Day 21 Waning Gibbous

Sat 10

Partly Cloudy Day Partly Cloudy
4°/-2°
Rain drop 24%
Add

Day

4°
Partly Cloudy Day
Mixed precipitation
24%
WSW 15 km/h

Partly cloudy. High 4°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity63%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:27
  • Sunset
    Sunset17:06

Night

-2°
Mostly Cloudy Night
Mixed precipitation
24%
WSW 11 km/h

Mostly cloudy. Low -2°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise00:10
  • Moonset
    Moonset11:22
  • Moon Phase - Day 22 Last Quarter

Sun 11

Foggy PM Fog
6°/-2°
Rain drop 24%
Add

Day

6°
Foggy
Rain drop
24%
WNW 15 km/h

patches of fog developing in the afternoon. High 6°C. Winds WNW at 10 to 15 km/h.

  • Humidity
    Humidity58%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:27
  • Sunset
    Sunset17:07

Night

-2°
Foggy
Mixed precipitation
24%
NW 12 km/h

patches of fog early, and then cloudy. Low -2°C. Winds NW at 10 to 15 km/h.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise01:11
  • Moonset
    Moonset11:46
  • Moon Phase - Day 23 Waning Crescent

Mon 12

Foggy AM Fog / PM Clouds
5°/-3°
Rain drop 24%
Add

Day

5°
Foggy
Rain drop
24%
NW 14 km/h

Cloudy, with areas of morning fog. High 5°C. Winds NW at 10 to 15 km/h.

  • Humidity
    Humidity56%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise07:27
  • Sunset
    Sunset17:08

Night

-3°
Mostly Cloudy Night
Mixed precipitation
23%
WSW 10 km/h

Mostly cloudy. Low -3°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise02:13
  • Moonset
    Moonset12:13
  • Moon Phase - Day 24 Waning Crescent
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