Extended 10-day forecasts, Herndon (VA)
Hourly detail for the next 48 hours, six-hourly segments for the rest of the week.
This is the 10-day extended forecast for Herndon, the United States of America. The forecast is updated every three hours and displays the temperature, weather conditions, wind direction and speed, as well as the chance of precipitation.
Check out our September climate page to see if the current temperatures in Herndon is typical for this time of year.
Today · Friday 4 Sep
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 02:00 |
Clear skies
|
25°C (77°F) | 0 mm (0 in) | 86% | SW 2 m/s (4 knots) |
| 03:00 |
Clear skies
|
25°C (77°F) | 0 mm (0 in) | 88% | SW 2 m/s (4 knots) |
| 04:00 |
Clear skies
|
25°C (77°F) | 0 mm (0 in) | 88% | W 2 m/s (4 knots) |
| 05:00 |
Mostly clear
|
25°C (77°F) | 0 mm (0 in) | 85% | W 2 m/s (4 knots) |
| 06:00 |
Rain showers
|
24°C (75°F) | 0.8 mm (0.03 in) | 84% | N 2 m/s (4 knots) |
| 07:00 |
Light rain showers
|
23°C (73°F) | 0.2 mm (0.01 in) | 89% | N 4 m/s (8 knots) |
| 08:00 |
Clear skies
|
24°C (75°F) | 0 mm (0 in) | 88% | W 2 m/s (4 knots) |
| 09:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 80% | W 2 m/s (4 knots) |
| 10:00 |
Clear skies
|
30°C (86°F) | 0 mm (0 in) | 65% | W 3 m/s (6 knots) |
| 11:00 |
Clear skies
|
31°C (88°F) | 0 mm (0 in) | 56% | NW 4 m/s (8 knots) |
| 12:00 |
Clear skies
|
32°C (90°F) | 0 mm (0 in) | 52% | NW 4 m/s (8 knots) |
| 13:00 |
Clear skies
|
33°C (91°F) | 0 mm (0 in) | 49% | NW 4 m/s (8 knots) |
| 14:00 |
Clear skies
|
34°C (93°F) | 0 mm (0 in) | 46% | NW 4 m/s (8 knots) |
| 15:00 |
Mostly sunny
|
34°C (93°F) | 0 mm (0 in) | 45% | NW 4 m/s (8 knots) |
| 16:00 |
Heavy rain showers
|
35°C (95°F) | 1.5 mm (0.1 in) | 45% | W 3 m/s (6 knots) |
| 17:00 |
Rain showers
|
31°C (88°F) | 0.4 mm (0.02 in) | 63% | NW 6 m/s (12 knots) |
| 18:00 |
Partly cloudy
|
30°C (86°F) | 0 mm (0 in) | 68% | NW 3 m/s (6 knots) |
| 19:00 |
Cloudy
|
30°C (86°F) | 0 mm (0 in) | 69% | W 3 m/s (6 knots) |
| 20:00 |
Partly cloudy
|
28°C (82°F) | 0 mm (0 in) | 77% | W 3 m/s (6 knots) |
| 21:00 |
Partly cloudy
|
27°C (81°F) | 0 mm (0 in) | 80% | NW 3 m/s (6 knots) |
| 22:00 |
Partly cloudy
|
26°C (79°F) | 0 mm (0 in) | 82% | NW 3 m/s (6 knots) |
| 23:00 |
Partly cloudy
|
25°C (77°F) | 0 mm (0 in) | 85% | NW 3 m/s (6 knots) |
02:00
Clear skies
86% · SW 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
03:00
Clear skies
88% · SW 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
04:00
Clear skies
88% · W 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
05:00
Mostly clear
85% · W 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
06:00
Rain showers
84% · N 2 m/s (4 knots)
24°C (75°F)
0.8 mm (0.03 in)
07:00
Light rain showers
89% · N 4 m/s (8 knots)
23°C (73°F)
0.2 mm (0.01 in)
08:00
Clear skies
88% · W 2 m/s (4 knots)
24°C (75°F)
0 mm (0 in)
09:00
Clear skies
80% · W 2 m/s (4 knots)
27°C (81°F)
0 mm (0 in)
10:00
Clear skies
65% · W 3 m/s (6 knots)
30°C (86°F)
0 mm (0 in)
11:00
Clear skies
56% · NW 4 m/s (8 knots)
31°C (88°F)
0 mm (0 in)
12:00
Clear skies
52% · NW 4 m/s (8 knots)
32°C (90°F)
0 mm (0 in)
13:00
Clear skies
49% · NW 4 m/s (8 knots)
33°C (91°F)
0 mm (0 in)
14:00
Clear skies
46% · NW 4 m/s (8 knots)
34°C (93°F)
0 mm (0 in)
15:00
Mostly sunny
45% · NW 4 m/s (8 knots)
34°C (93°F)
0 mm (0 in)
16:00
Heavy rain showers
45% · W 3 m/s (6 knots)
35°C (95°F)
1.5 mm (0.1 in)
17:00
Rain showers
63% · NW 6 m/s (12 knots)
31°C (88°F)
0.4 mm (0.02 in)
18:00
Partly cloudy
68% · NW 3 m/s (6 knots)
30°C (86°F)
0 mm (0 in)
19:00
Cloudy
69% · W 3 m/s (6 knots)
30°C (86°F)
0 mm (0 in)
20:00
Partly cloudy
77% · W 3 m/s (6 knots)
28°C (82°F)
0 mm (0 in)
21:00
Partly cloudy
80% · NW 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
22:00
Partly cloudy
82% · NW 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
23:00
Partly cloudy
85% · NW 3 m/s (6 knots)
25°C (77°F)
0 mm (0 in)
Tomorrow · Saturday 5 Sep
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 00:00 |
Mostly clear
|
25°C (77°F) | 0 mm (0 in) | 87% | N 3 m/s (6 knots) |
| 01:00 |
Mostly clear
|
24°C (75°F) | 0 mm (0 in) | 89% | N 2 m/s (4 knots) |
| 02:00 |
Partly cloudy
|
24°C (75°F) | 0 mm (0 in) | 90% | NW 2 m/s (4 knots) |
| 03:00 |
Partly cloudy
|
24°C (75°F) | 0 mm (0 in) | 91% | NW 2 m/s (4 knots) |
| 04:00 |
Partly cloudy
|
23°C (73°F) | 0 mm (0 in) | 91% | NW 2 m/s (4 knots) |
| 05:00 |
Partly cloudy
|
23°C (73°F) | 0 mm (0 in) | 92% | N 2 m/s (4 knots) |
| 06:00 |
Partly cloudy
|
23°C (73°F) | 0 mm (0 in) | 93% | NW 2 m/s (4 knots) |
| 07:00 |
Cloudy
|
23°C (73°F) | 0 mm (0 in) | 93% | N 2 m/s (4 knots) |
| 08:00 |
Cloudy
|
24°C (75°F) | 0 mm (0 in) | 88% | N 2 m/s (4 knots) |
| 09:00 |
Cloudy
|
25°C (77°F) | 0 mm (0 in) | 82% | N 2 m/s (4 knots) |
| 10:00 |
Cloudy
|
26°C (79°F) | 0 mm (0 in) | 76% | N 3 m/s (6 knots) |
| 11:00 |
Cloudy
|
26°C (79°F) | 0 mm (0 in) | 76% | N 3 m/s (6 knots) |
| 12:00 |
Cloudy
|
27°C (81°F) | 0 mm (0 in) | 71% | N 3 m/s (6 knots) |
| 13:00 |
Cloudy
|
27°C (81°F) | 0 mm (0 in) | 66% | N 3 m/s (6 knots) |
| 14:00 |
Cloudy
|
27°C (81°F) | 0 mm (0 in) | 63% | N 2 m/s (4 knots) |
| 15:00 |
Cloudy
|
28°C (82°F) | 0 mm (0 in) | 60% | N 2 m/s (4 knots) |
| 16:00 |
Light rain
|
28°C (82°F) | 0.1 mm (0 in) | 60% | N 3 m/s (6 knots) |
| 17:00 |
Heavy rain
|
27°C (81°F) | 1.7 mm (0.1 in) | 65% | E 3 m/s (6 knots) |
| 18:00 |
Rain
|
24°C (75°F) | 0.4 mm (0.02 in) | 87% | E 3 m/s (6 knots) |
| 19:00 |
Partly cloudy
|
24°C (75°F) | 0 mm (0 in) | 91% | E 1 m/s (2 knots) |
| 20:00 |
Partly cloudy
|
23°C (73°F) | 0 mm (0 in) | 97% | NW 1 m/s (2 knots) |
| 21:00 |
Cloudy
|
23°C (73°F) | 0 mm (0 in) | 96% | N 1 m/s (2 knots) |
| 22:00 |
Cloudy
|
23°C (73°F) | 0 mm (0 in) | 97% | NW 1 m/s (2 knots) |
| 23:00 |
Partly cloudy
|
23°C (73°F) | 0 mm (0 in) | 96% | N 3 m/s (6 knots) |
00:00
Mostly clear
87% · N 3 m/s (6 knots)
25°C (77°F)
0 mm (0 in)
01:00
Mostly clear
89% · N 2 m/s (4 knots)
24°C (75°F)
0 mm (0 in)
02:00
Partly cloudy
90% · NW 2 m/s (4 knots)
24°C (75°F)
0 mm (0 in)
03:00
Partly cloudy
91% · NW 2 m/s (4 knots)
24°C (75°F)
0 mm (0 in)
04:00
Partly cloudy
91% · NW 2 m/s (4 knots)
23°C (73°F)
0 mm (0 in)
05:00
Partly cloudy
92% · N 2 m/s (4 knots)
23°C (73°F)
0 mm (0 in)
06:00
Partly cloudy
93% · NW 2 m/s (4 knots)
23°C (73°F)
0 mm (0 in)
07:00
Cloudy
93% · N 2 m/s (4 knots)
23°C (73°F)
0 mm (0 in)
08:00
Cloudy
88% · N 2 m/s (4 knots)
24°C (75°F)
0 mm (0 in)
09:00
Cloudy
82% · N 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
10:00
Cloudy
76% · N 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
11:00
Cloudy
76% · N 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
12:00
Cloudy
71% · N 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
13:00
Cloudy
66% · N 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
14:00
Cloudy
63% · N 2 m/s (4 knots)
27°C (81°F)
0 mm (0 in)
15:00
Cloudy
60% · N 2 m/s (4 knots)
28°C (82°F)
0 mm (0 in)
16:00
Light rain
60% · N 3 m/s (6 knots)
28°C (82°F)
0.1 mm (0 in)
17:00
Heavy rain
65% · E 3 m/s (6 knots)
27°C (81°F)
1.7 mm (0.1 in)
18:00
Rain
87% · E 3 m/s (6 knots)
24°C (75°F)
0.4 mm (0.02 in)
19:00
Partly cloudy
91% · E 1 m/s (2 knots)
24°C (75°F)
0 mm (0 in)
20:00
Partly cloudy
97% · NW 1 m/s (2 knots)
23°C (73°F)
0 mm (0 in)
21:00
Cloudy
96% · N 1 m/s (2 knots)
23°C (73°F)
0 mm (0 in)
22:00
Cloudy
97% · NW 1 m/s (2 knots)
23°C (73°F)
0 mm (0 in)
23:00
Partly cloudy
96% · N 3 m/s (6 knots)
23°C (73°F)
0 mm (0 in)
Next 7 days
Six-hour segments
Day
Night
02:00
Morning
08:00
Afternoon
14:00
Evening
20:00
Sunday
6 Sep
21°C (70°F)
0 mm (0 in)
Mostly clear
77% · NE 3 m/s (6 knots)
19°C (66°F)
0 mm (0 in)
Mostly sunny
79% · N 3 m/s (6 knots)
28°C (82°F)
0.3 mm (0.01 in)
Partly cloudy
40% · E 3 m/s (6 knots)
24°C (75°F)
0 mm (0 in)
Mostly clear
60% · SE 3 m/s (6 knots)
Sun
6 Sep
night
21°C (70°F)
0 mm (0 in)
Mostly clear
77%
3 m/s (6 knots)
morning
19°C (66°F)
0 mm (0 in)
Mostly sunny
79%
3 m/s (6 knots)
afternoon
28°C (82°F)
0.3 mm (0.01 in)
Partly cloudy
40%
3 m/s (6 knots)
evening
24°C (75°F)
0 mm (0 in)
Mostly clear
60%
3 m/s (6 knots)
Monday
7 Sep
19°C (66°F)
0 mm (0 in)
Clear skies
90% · E 2 m/s (4 knots)
20°C (68°F)
0.4 mm (0.02 in)
Clear skies
87% · NE 1 m/s (2 knots)
27°C (81°F)
0 mm (0 in)
Partly cloudy
48% · SE 2 m/s (4 knots)
24°C (75°F)
0 mm (0 in)
Partly cloudy
60% · SE 2 m/s (4 knots)
Mon
7 Sep
night
19°C (66°F)
0 mm (0 in)
Clear skies
90%
2 m/s (4 knots)
morning
20°C (68°F)
0.4 mm (0.02 in)
Clear skies
87%
1 m/s (2 knots)
afternoon
27°C (81°F)
0 mm (0 in)
Partly cloudy
48%
2 m/s (4 knots)
evening
24°C (75°F)
0 mm (0 in)
Partly cloudy
60%
2 m/s (4 knots)
Tuesday
8 Sep
19°C (66°F)
0 mm (0 in)
Clear skies
84% · S 2 m/s (4 knots)
20°C (68°F)
0 mm (0 in)
Partly cloudy
85% · S 1 m/s (2 knots)
30°C (86°F)
0 mm (0 in)
Cloudy
38% · SW 2 m/s (4 knots)
26°C (79°F)
0 mm (0 in)
Cloudy
49% · S 3 m/s (6 knots)
Tue
8 Sep
night
19°C (66°F)
0 mm (0 in)
Clear skies
84%
2 m/s (4 knots)
morning
20°C (68°F)
0 mm (0 in)
Partly cloudy
85%
1 m/s (2 knots)
afternoon
30°C (86°F)
0 mm (0 in)
Cloudy
38%
2 m/s (4 knots)
evening
26°C (79°F)
0 mm (0 in)
Cloudy
49%
3 m/s (6 knots)
Wednesday
9 Sep
22°C (72°F)
0 mm (0 in)
Partly cloudy
64% · S 3 m/s (6 knots)
21°C (70°F)
0 mm (0 in)
Cloudy
68% · S 3 m/s (6 knots)
30°C (86°F)
0.5 mm (0.02 in)
Light rain
44% · S 3 m/s (6 knots)
24°C (75°F)
2.9 mm (0.1 in)
Rain
78% · N 1 m/s (2 knots)
Wed
9 Sep
night
22°C (72°F)
0 mm (0 in)
Partly cloudy
64%
3 m/s (6 knots)
morning
21°C (70°F)
0 mm (0 in)
Cloudy
68%
3 m/s (6 knots)
afternoon
30°C (86°F)
0.5 mm (0.02 in)
Light rain
44%
3 m/s (6 knots)
evening
24°C (75°F)
2.9 mm (0.1 in)
Rain
78%
1 m/s (2 knots)
Thursday
10 Sep
22°C (72°F)
6.5 mm (0.3 in)
Heavy rain showers
95% · S 3 m/s (6 knots)
22°C (72°F)
1.7 mm (0.1 in)
Rain showers
91% · SW 1 m/s (2 knots)
32°C (90°F)
0.4 mm (0.02 in)
Cloudy
49% · SW 4 m/s (8 knots)
28°C (82°F)
0.2 mm (0.01 in)
Cloudy
65% · SW 3 m/s (6 knots)
Thu
10 Sep
night
22°C (72°F)
6.5 mm (0.3 in)
Heavy rain showers
95%
3 m/s (6 knots)
morning
22°C (72°F)
1.7 mm (0.1 in)
Rain showers
91%
1 m/s (2 knots)
afternoon
32°C (90°F)
0.4 mm (0.02 in)
Cloudy
49%
4 m/s (8 knots)
evening
28°C (82°F)
0.2 mm (0.01 in)
Cloudy
65%
3 m/s (6 knots)
Friday
11 Sep
23°C (73°F)
0 mm (0 in)
Partly cloudy
78% · NW 4 m/s (8 knots)
20°C (68°F)
0.2 mm (0.01 in)
Clear skies
78% · NW 4 m/s (8 knots)
27°C (81°F)
1.7 mm (0.1 in)
Rain showers
48% · NW 4 m/s (8 knots)
23°C (73°F)
0 mm (0 in)
Clear skies
63% · NW 4 m/s (8 knots)
Fri
11 Sep
night
23°C (73°F)
0 mm (0 in)
Partly cloudy
78%
4 m/s (8 knots)
morning
20°C (68°F)
0.2 mm (0.01 in)
Clear skies
78%
4 m/s (8 knots)
afternoon
27°C (81°F)
1.7 mm (0.1 in)
Rain showers
48%
4 m/s (8 knots)
evening
23°C (73°F)
0 mm (0 in)
Clear skies
63%
4 m/s (8 knots)
Saturday
12 Sep
19°C (66°F)
0 mm (0 in)
Clear skies
76% · NW 4 m/s (8 knots)
19°C (66°F)
0 mm (0 in)
Clear skies
78% · NW 3 m/s (6 knots)
25°C (77°F)
0 mm (0 in)
Cloudy
47% · NW 5 m/s (10 knots)
22°C (72°F)
0 mm (0 in)
Mostly clear
57% · NW 2 m/s (4 knots)
Sat
12 Sep
night
19°C (66°F)
0 mm (0 in)
Clear skies
76%
4 m/s (8 knots)
morning
19°C (66°F)
0 mm (0 in)
Clear skies
78%
3 m/s (6 knots)
afternoon
25°C (77°F)
0 mm (0 in)
Cloudy
47%
5 m/s (10 knots)
evening
22°C (72°F)
0 mm (0 in)
Mostly clear
57%
2 m/s (4 knots)
Data from MET Norway.
Prefer the quick-glance version? See the 10-day summary.
Herndon weather by month
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