Extended 10-day forecasts, Herndon
Check out our December climate page to see if the current temperatures in Herndon is typical for this time of year.
HOURLY
Temperature
Feels like
Precipitation
Chance of rain
Wind direction
Wind speed
00:00
-2°C
-6°C
0 mm
2%
SE 
3 m/s
01:00
-2°C
-6°C
0 mm
2%
S
4 m/s
02:00
-2°C
-6°C
0 mm
2%
S
3 m/s
03:00
-2°C
-5°C
0 mm
2%
S
2 m/s
04:00
-2°C
-6°C
0 mm
2%
SW
3 m/s
05:00
-2°C
-5°C
0 mm
7%
S
2 m/s
06:00
-2°C
-5°C
0 mm
11%
S
2 m/s
07:00
-2°C
-2°C
0 mm
16%
S
1 m/s
08:00
-2°C
-2°C
0.3 mm
23%
SW
1 m/s
09:00
-1°C
-1°C
0 mm
31%
W
10:00
-1°C
-3°C
0 mm
39%
W
2 m/s
11:00
0°C
0°C
0 mm
34%
NW
1 m/s
12:00
0°C
0°C
0 mm
29%
NW
1 m/s
13:00
2°C
1°C
0 mm
25%
SW
2 m/s
14:00
4°C
2°C
0 mm
20%
SW
2 m/s
15:00
5°C
3°C
0 mm
15%
SW
2 m/s
16:00
4°C
2°C
0 mm
10%
SW
2 m/s
17:00
1°C
-1°C
0 mm
7%
SW
2 m/s
18:00
2°C
0°C
0 mm
5%
W
2 m/s
19:00
2°C
0°C
0 mm
2%
W
2 m/s
20:00
3°C
1°C
0 mm
2%
NW
2 m/s
21:00
3°C
1°C
0 mm
2%
NW
2 m/s
22:00
3°C
1°C
0 mm
2%
NW
2 m/s
23:00
3°C
1°C
0 mm
2%
NW
2 m/s
-2°C
-6°C
0 mm
2%
SE
3 m/s
01:00
-2°C
-6°C
0 mm
2%
S
4 m/s
02:00
-2°C
-6°C
0 mm
2%
S
3 m/s
03:00
-2°C
-5°C
0 mm
2%
S
2 m/s
04:00
-2°C
-6°C
0 mm
2%
SW
3 m/s
05:00
-2°C
-5°C
0 mm
7%
S
2 m/s
06:00
-2°C
-5°C
0 mm
11%
S
2 m/s
07:00
-2°C
-2°C
0 mm
16%
S
1 m/s
08:00
-2°C
-2°C
0.3 mm
23%
SW
1 m/s
09:00
-1°C
-1°C
0 mm
31%
W
10:00
-1°C
-3°C
0 mm
39%
W
2 m/s
11:00
0°C
0°C
0 mm
34%
NW
1 m/s
12:00
0°C
0°C
0 mm
29%
NW
1 m/s
13:00
2°C
1°C
0 mm
25%
SW
2 m/s
14:00
4°C
2°C
0 mm
20%
SW
2 m/s
15:00
5°C
3°C
0 mm
15%
SW
2 m/s
16:00
4°C
2°C
0 mm
10%
SW
2 m/s
17:00
1°C
-1°C
0 mm
7%
SW
2 m/s
18:00
2°C
0°C
0 mm
5%
W
2 m/s
19:00
2°C
0°C
0 mm
2%
W
2 m/s
20:00
3°C
1°C
0 mm
2%
NW
2 m/s
21:00
3°C
1°C
0 mm
2%
NW
2 m/s
22:00
3°C
1°C
0 mm
2%
NW
2 m/s
23:00
3°C
1°C
0 mm
2%
NW
2 m/s
HOURLY
Temperature
Feels like
Precipitation
Chance of rain
Wind direction
Wind speed
00:00
2°C
1°C
0 mm
2%
N
2 m/s
01:00
2°C
1°C
0 mm
2%
N
2 m/s
02:00
2°C
1°C
0 mm
2%
N
2 m/s
03:00
2°C
0°C
0 mm
2%
N
2 m/s
04:00
2°C
0°C
0 mm
2%
N
2 m/s
05:00
2°C
0°C
0 mm
2%
NE
2 m/s
06:00
2°C
0°C
0 mm
2%
NE
2 m/s
07:00
2°C
0°C
0 mm
2%
E
2 m/s
08:00
2°C
0°C
0 mm
2%
NE
2 m/s
09:00
3°C
0°C
0 mm
2%
NE
3 m/s
10:00
4°C
1°C
0 mm
2%
NE
3 m/s
11:00
5°C
2°C
0 mm
2%
NE
3 m/s
12:00
5°C
3°C
0 mm
2%
NE
2 m/s
13:00
5°C
4°C
0 mm
2%
NE
2 m/s
14:00
5°C
4°C
0 mm
2%
N
2 m/s
15:00
6°C
5°C
0 mm
2%
N
2 m/s
16:00
6°C
5°C
0 mm
2%
N
2 m/s
17:00
5°C
3°C
0 mm
2%
SE
2 m/s
18:00
4°C
3°C
0 mm
2%
SE
2 m/s
19:00
3°C
2°C
0 mm
2%
E
2 m/s
20:00
3°C
1°C
0 mm
2%
E
2 m/s
21:00
2°C
1°C
0 mm
2%
E
1 m/s
22:00
1°C
0°C
0 mm
2%
E
1 m/s
23:00
0°C
0°C
0 mm
2%
E
1 m/s
2°C
1°C
0 mm
2%
N
2 m/s
01:00
2°C
1°C
0 mm
2%
N
2 m/s
02:00
2°C
1°C
0 mm
2%
N
2 m/s
03:00
2°C
0°C
0 mm
2%
N
2 m/s
04:00
2°C
0°C
0 mm
2%
N
2 m/s
05:00
2°C
0°C
0 mm
2%
NE
2 m/s
06:00
2°C
0°C
0 mm
2%
NE
2 m/s
07:00
2°C
0°C
0 mm
2%
E
2 m/s
08:00
2°C
0°C
0 mm
2%
NE
2 m/s
09:00
3°C
0°C
0 mm
2%
NE
3 m/s
10:00
4°C
1°C
0 mm
2%
NE
3 m/s
11:00
5°C
2°C
0 mm
2%
NE
3 m/s
12:00
5°C
3°C
0 mm
2%
NE
2 m/s
13:00
5°C
4°C
0 mm
2%
NE
2 m/s
14:00
5°C
4°C
0 mm
2%
N
2 m/s
15:00
6°C
5°C
0 mm
2%
N
2 m/s
16:00
6°C
5°C
0 mm
2%
N
2 m/s
17:00
5°C
3°C
0 mm
2%
SE
2 m/s
18:00
4°C
3°C
0 mm
2%
SE
2 m/s
19:00
3°C
2°C
0 mm
2%
E
2 m/s
20:00
3°C
1°C
0 mm
2%
E
2 m/s
21:00
2°C
1°C
0 mm
2%
E
1 m/s
22:00
1°C
0°C
0 mm
2%
E
1 m/s
23:00
0°C
0°C
0 mm
2%
E
1 m/s
Thursday 26 Dec
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
-1°C
-1°C
0 mm
2%
82%
E
1 m/s
-1°C
-1°C
0 mm
2%
82%
E
1 m/s
morning
3°C
1°C
0 mm
5%
74%
E
2 m/s
3°C
1°C
0 mm
5%
74%
E
2 m/s
afternoon
5°C
5°C
0 mm
5%
55%
SE
1 m/s
5°C
5°C
0 mm
5%
55%
SE
1 m/s
evening
3°C
3°C
0 mm
3%
65%
E
2 m/s
3°C
3°C
0 mm
3%
65%
E
2 m/s
Friday 27 Dec
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
-1°C
-1°C
0 mm
2%
78%
SE
1 m/s
-1°C
-1°C
0 mm
2%
78%
SE
1 m/s
morning
3°C
1°C
0 mm
2%
70%
E
2 m/s
3°C
1°C
0 mm
2%
70%
E
2 m/s
afternoon
7°C
5°C
0 mm
2%
51%
SE
3 m/s
7°C
5°C
0 mm
2%
51%
SE
3 m/s
evening
5°C
3°C
0.1 mm
13%
69%
SE
3 m/s
5°C
3°C
0.1 mm
13%
69%
SE
3 m/s
Saturday 28 Dec
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
1°C
-1°C
0.1 mm
29%
86%
SE
3 m/s
1°C
-1°C
0.1 mm
29%
86%
SE
3 m/s
morning
7°C
6°C
0.8 mm
32%
87%
SE
3 m/s
7°C
6°C
0.8 mm
32%
87%
SE
3 m/s
afternoon
11°C
11°C
0 mm
34%
80%
S
3 m/s
11°C
11°C
0 mm
34%
80%
S
3 m/s
evening
11°C
11°C
0.1 mm
34%
84%
S
3 m/s
11°C
11°C
0.1 mm
34%
84%
S
3 m/s
Sunday 29 Dec
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
7°C
5°C
0.1 mm
47%
90%
S
4 m/s
7°C
5°C
0.1 mm
47%
90%
S
4 m/s
morning
15°C
15°C
1.3 mm
62%
87%
S
6 m/s
15°C
15°C
1.3 mm
62%
87%
S
6 m/s
afternoon
16°C
16°C
9.4 mm
73%
80%
S
5 m/s
16°C
16°C
9.4 mm
73%
80%
S
5 m/s
evening
15°C
15°C
12 mm
81%
77%
S
4 m/s
15°C
15°C
12 mm
81%
77%
S
4 m/s
Monday 30 Dec
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
12°C
12°C
2.7 mm
80%
76%
NW
4 m/s
12°C
12°C
2.7 mm
80%
76%
NW
4 m/s
morning
13°C
13°C
0 mm
77%
75%
NW
2 m/s
13°C
13°C
0 mm
77%
75%
NW
2 m/s
afternoon
16°C
16°C
0 mm
69%
60%
NW
3 m/s
16°C
16°C
0 mm
69%
60%
NW
3 m/s
evening
12°C
12°C
0 mm
40%
69%
S
2 m/s
12°C
12°C
0 mm
40%
69%
S
2 m/s
Tuesday 31 Dec
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
8°C
7°C
0 mm
16%
83%
S
2 m/s
8°C
7°C
0 mm
16%
83%
S
2 m/s
morning
10°C
10°C
0 mm
15%
83%
SE
3 m/s
10°C
10°C
0 mm
15%
83%
SE
3 m/s
afternoon
14°C
14°C
2 mm
35%
75%
SE
4 m/s
14°C
14°C
2 mm
35%
75%
SE
4 m/s
evening
14°C
14°C
2.1 mm
55%
80%
SE
5 m/s
14°C
14°C
2.1 mm
55%
80%
SE
5 m/s
Wednesday 1 Jan
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
11°C
11°C
0 mm
63%
85%
SW
4 m/s
11°C
11°C
0 mm
63%
85%
SW
4 m/s
morning
11°C
11°C
0 mm
62%
74%
W
4 m/s
11°C
11°C
0 mm
62%
74%
W
4 m/s
afternoon
11°C
11°C
0 mm
41%
50%
W
7 m/s
11°C
11°C
0 mm
41%
50%
W
7 m/s
evening
7°C
4°C
0 mm
31%
55%
NW
4 m/s
7°C
4°C
0 mm
31%
55%
NW
4 m/s
Thursday 2 Jan
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
1°C
0°C
0 mm
21%
68%
W
2 m/s
1°C
0°C
0 mm
21%
68%
W
2 m/s
morning
5°C
1°C
0 mm
17%
58%
W
4 m/s
5°C
1°C
0 mm
17%
58%
W
4 m/s
afternoon
6°C
3°C
0 mm
28%
39%
W
6 m/s
6°C
3°C
0 mm
28%
39%
W
6 m/s
evening
4°C
0°C
0 mm
25%
47%
W
4 m/s
4°C
0°C
0 mm
25%
47%
W
4 m/s
Friday 3 Jan
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
0°C
-4°C
0 mm
24%
59%
W
4 m/s
0°C
-4°C
0 mm
24%
59%
W
4 m/s
morning
5°C
1°C
0 mm
27%
59%
W
5 m/s
5°C
1°C
0 mm
27%
59%
W
5 m/s
afternoon
6°C
3°C
0 mm
26%
42%
W
5 m/s
6°C
3°C
0 mm
26%
42%
W
5 m/s
evening
5°C
2°C
0.1 mm
17%
56%
S
3 m/s
5°C
2°C
0.1 mm
17%
56%
S
3 m/s
Saturday 4 Jan
Temperature
Feels like
Precipitation
Chance of rain
Humidity
Wind direction
Wind speed
Temp
Feels
Rain
Chance
Humidity
Wind
Speed
night
1°C
-2°C
0.2 mm
11%
83%
S
3 m/s
1°C
-2°C
0.2 mm
11%
83%
S
3 m/s
morning
2°C
-2°C
0.2 mm
13%
62%
SW
3 m/s
2°C
-2°C
0.2 mm
13%
62%
SW
3 m/s
afternoon
4°C
0°C
0.3 mm
19%
49%
W
5 m/s
4°C
0°C
0.3 mm
19%
49%
W
5 m/s
evening
2°C
-3°C
0.2 mm
24%
57%
NW
6 m/s
2°C
-3°C
0.2 mm
24%
57%
NW
6 m/s
