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

As of 05:34 EDT
alertLevel3

Small Craft Advisory

Today

Mostly Clear Day Mostly Sunny
25°/13°
Rain drop 2%
Subtract

Day

25°
Mostly Clear Day
Rain drop
2%
NW 21 km/h

Generally clear. High 25°C. Winds NW at 15 to 25 km/h.

  • Humidity
    Humidity54%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:43
  • Sunset
    Sunset20:36

Night

13°
Clear Night
Rain drop
5%
NW 17 km/h

Generally clear. Low 13°C. Winds NW at 10 to 15 km/h.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise05:47
  • Moonset
    Moonset21:48
  • Moon Phase - Day 0 New

Tue 16

Mostly Clear Day Mostly Sunny
26°/16°
Rain drop 3%
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Day

26°
Mostly Clear Day
Rain drop
3%
WSW 10 km/h

Generally clear. High 26°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity43%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:43
  • Sunset
    Sunset20:37

Night

16°
Partly Cloudy Night
Rain drop
14%
SSE 12 km/h

Partly cloudy. Low 16°C. Winds SSE at 10 to 15 km/h.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise07:01
  • Moonset
    Moonset22:39
  • Moon Phase - Day 2 Waxing Crescent

Wed 17

Partly Cloudy Day Partly Cloudy
30°/20°
Rain drop 6%
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Day

30°
Partly Cloudy Day
Rain drop
6%
SW 15 km/h

Partly cloudy. High 30°C. Winds SW at 10 to 15 km/h.

  • Humidity
    Humidity53%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:43
  • Sunset
    Sunset20:37

Night

20°
Mostly Cloudy Night
Rain drop
6%
S 13 km/h

Mostly cloudy. Low 20°C. Winds S at 10 to 15 km/h.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise08:19
  • Moonset
    Moonset23:20
  • Moon Phase - Day 3 Waxing Crescent

Thu 18

Scattered Thunderstorms PM T-Storms
34°/20°
Rain drop 48%
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Day

34°
Scattered Thunderstorms
Rain drop
48%
SW 25 km/h

Thunderstorms developing in the afternoon. Potential for severe thunderstorms. High 34°C. Winds SW at 15 to 30 km/h. Chance of rain 50%.

  • Humidity
    Humidity56%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:43
  • Sunset
    Sunset20:37

Night

20°
Scattered Thunderstorms Night
Rain drop
56%
WSW 18 km/h

Scattered thunderstorms. Low 20°C. Winds WSW at 15 to 25 km/h. Chance of rain 60%.

  • Humidity
    Humidity82%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise09:37
  • Moonset
    Moonset23:52
  • Moon Phase - Day 4 Waxing Crescent

Fri 19

Showers Showers
28°/17°
Rain drop 64%
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Day

28°
Showers
Rain drop
64%
WNW 19 km/h

Showers. High 28°C. Winds WNW at 15 to 25 km/h. Chance of rain 60%.

  • Humidity
    Humidity62%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise05:44
  • Sunset
    Sunset20:37

Night

17°
Partly Cloudy Night
Rain drop
16%
WNW 16 km/h

Partly cloudy. Low 17°C. Winds WNW at 10 to 15 km/h.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:50
  • Moonset
    Moonset--
  • Moon Phase - Day 5 Waxing Crescent

Sat 20

Mostly Clear Day Mostly Sunny
29°/17°
Rain drop 2%
Add

Day

29°
Mostly Clear Day
Rain drop
2%
WNW 22 km/h

Generally clear. High 29°C. Winds WNW at 15 to 30 km/h.

  • Humidity
    Humidity43%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:44
  • Sunset
    Sunset20:38

Night

17°
Mostly Clear Night
Rain drop
2%
W 17 km/h

Generally clear. Low 17°C. Winds W at 10 to 15 km/h.

  • Humidity
    Humidity58%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:58
  • Moonset
    Moonset00:19
  • Moon Phase - Day 6 Waxing Crescent

Sun 21

Partly Cloudy Day Partly Cloudy
29°/18°
Rain drop 5%
Add

Day

29°
Partly Cloudy Day
Rain drop
5%
W 16 km/h

Partly cloudy. High 29°C. Winds W at 10 to 15 km/h.

  • Humidity
    Humidity45%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:44
  • Sunset
    Sunset20:38

Night

18°
Partly Cloudy Night
Rain drop
24%
SSW 12 km/h

Partly cloudy. Low 18°C. Winds SSW at 10 to 15 km/h.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise13:03
  • Moonset
    Moonset00:43
  • Moon Phase - Day 7 First Quarter

Mon 22

Mostly Cloudy Day Mostly Cloudy
29°/19°
Rain drop 24%
Add

Day

29°
Mostly Cloudy Day
Rain drop
24%
SW 16 km/h

Mostly cloudy. High 29°C. Winds SW at 10 to 15 km/h.

  • Humidity
    Humidity57%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise05:44
  • Sunset
    Sunset20:38

Night

19°
Scattered Showers Night
Rain drop
32%
SSW 12 km/h

Showers late at night. Low 19°C. Winds SSW at 10 to 15 km/h. Chance of rain 30%.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise14:06
  • Moonset
    Moonset01:05
  • Moon Phase - Day 8 Waxing Gibbous

Tue 23

Scattered Showers Day PM Showers
29°/19°
Rain drop 30%
Add

Day

29°
Scattered Showers Day
Rain drop
30%
W 15 km/h

Afternoon showers. High 29°C. Winds W at 10 to 15 km/h. Chance of rain 30%.

  • Humidity
    Humidity61%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:44
  • Sunset
    Sunset20:38

Night

19°
Scattered Showers Night
Rain drop
30%
S 12 km/h

Showers early. Low 19°C. Winds S at 10 to 15 km/h. Chance of rain 30%.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise15:09
  • Moonset
    Moonset01:28
  • Moon Phase - Day 9 Waxing Gibbous

Wed 24

Partly Cloudy Day Partly Cloudy
29°/18°
Rain drop 24%
Add

Day

29°
Partly Cloudy Day
Rain drop
24%
W 12 km/h

Partly cloudy. High 29°C. Winds W at 10 to 15 km/h.

  • Humidity
    Humidity58%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:45
  • Sunset
    Sunset20:38

Night

18°
Partly Cloudy Night
Rain drop
24%
SSW 11 km/h

Partly cloudy. Low 18°C. Winds SSW at 10 to 15 km/h.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise16:11
  • Moonset
    Moonset01:52
  • Moon Phase - Day 10 Waxing Gibbous

Thu 25

Mostly Cloudy Day Mostly Cloudy
29°/18°
Rain drop 24%
Add

Day

29°
Mostly Cloudy Day
Rain drop
24%
WSW 13 km/h

Mostly cloudy. High 29°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity57%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise05:45
  • Sunset
    Sunset20:39

Night

18°
Scattered Showers Night
Rain drop
31%
SW 11 km/h

Showers early. Low 18°C. Winds SW at 10 to 15 km/h. Chance of rain 30%.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise17:14
  • Moonset
    Moonset02:18
  • Moon Phase - Day 11 Waxing Gibbous

Fri 26

Partly Cloudy Day Partly Cloudy
30°/18°
Rain drop 24%
Add

Day

30°
Partly Cloudy Day
Rain drop
24%
W 13 km/h

Partly cloudy. High 30°C. Winds W at 10 to 15 km/h.

  • Humidity
    Humidity54%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:45
  • Sunset
    Sunset20:39

Night

18°
Partly Cloudy Night
Rain drop
17%
WSW 10 km/h

Partly cloudy. Low 18°C. Winds WSW at 10 to 15 km/h.

  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise18:15
  • Moonset
    Moonset02:49
  • Moon Phase - Day 12 Waxing Gibbous

Sat 27

Partly Cloudy Day Partly Cloudy
30°/19°
Rain drop 18%
Add

Day

30°
Partly Cloudy Day
Rain drop
18%
W 11 km/h

Partly cloudy. High 30°C. Winds W at 10 to 15 km/h.

  • Humidity
    Humidity53%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:46
  • Sunset
    Sunset20:39

Night

19°
Partly Cloudy Night
Rain drop
22%
SSW 11 km/h

Partly cloudy. Low 19°C. Winds SSW at 10 to 15 km/h.

  • Humidity
    Humidity71%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise19:14
  • Moonset
    Moonset03:27
  • Moon Phase - Day 12 Waxing Gibbous

Sun 28

Scattered Thunderstorms PM T-Storms
31°/20°
Rain drop 39%
Add

Day

31°
Scattered Thunderstorms
Rain drop
39%
SW 13 km/h

Thunderstorms developing in the afternoon. High 31°C. Winds SW at 10 to 15 km/h. Chance of rain 40%.

  • Humidity
    Humidity53%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:46
  • Sunset
    Sunset20:39

Night

20°
Scattered Thunderstorms Night
Rain drop
34%
SSW 11 km/h

Partly cloudy, with a possible thunderstorm. Low 20°C. Winds SSW at 10 to 15 km/h. Chance of rain 30%.

  • Humidity
    Humidity71%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise20:08
  • Moonset
    Moonset04:10
  • Moon Phase - Day 13 Waxing Gibbous

Mon 29

Scattered Thunderstorms PM T-Storms
32°/21°
Rain drop 48%
Add

Day

32°
Scattered Thunderstorms
Rain drop
48%
WSW 16 km/h

Thunderstorms developing in the afternoon. High 32°C. Winds WSW at 10 to 15 km/h. Chance of rain 50%.

  • Humidity
    Humidity55%
  • UV index
    UV Index9 of 11
  • Sunrise
    Sunrise05:47
  • Sunset
    Sunset20:39

Night

21°
Scattered Thunderstorms Night
Rain drop
48%
SW 13 km/h

Partly cloudy, with a possible thunderstorm. Low 21°C. Winds SW at 10 to 15 km/h. Chance of rain 50%.

  • Humidity
    Humidity67%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise20:55
  • Moonset
    Moonset05:01
  • Moon Phase - Day 14 Full
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