10-day forecast · Herndon
Day-by-day outlook up to 14 days: highs, lows, precipitation totals, wind and UV. Planning further ahead? Open the 30-day outlook →
Wed · Today
Mostly cloudy
85°
61°
9%
⌄
Wind 9 mph S
Gusts 24 mph
UV index 8 – High
Precip chance 9%
Sunrise 6:33 AM
Sunset 7:49 PM
Thu · Tomorrow
Sunny
91°
67°
0.84 in
⌄
Wind 16 mph W
Gusts 25 mph
UV index 8 – High
Precip chance 78% · 0.84 in
Sunrise 6:34 AM
Sunset 7:48 PM
Friday 28/8
Mostly cloudy
86°
66°
24%
⌄
Wind 9 mph N
Gusts 24 mph
UV index 7 – High
Precip chance 24%
Sunrise 6:34 AM
Sunset 7:46 PM
Saturday 29/8
Mostly cloudy
82°
66°
13%
⌄
Wind 6 mph N
Gusts 15 mph
UV index 7 – High
Precip chance 13%
Sunrise 6:35 AM
Sunset 7:45 PM
Sunday 30/8
Mostly cloudy
90°
64°
9%
⌄
Wind 6 mph S
Gusts 14 mph
UV index 8 – Very high
Precip chance 9%
Sunrise 6:36 AM
Sunset 7:43 PM
Monday 31/8
Mostly cloudy
85°
73°
9%
⌄
Wind 8 mph NE
Gusts 9 mph
UV index 7 – High
Precip chance 9%
Sunrise 6:37 AM
Sunset 7:42 PM
Tuesday 1/9
Partly cloudy
96°
73°
7%
⌄
Wind 6 mph W
Gusts 17 mph
UV index 8 – Very high
Precip chance 7%
Sunrise 6:38 AM
Sunset 7:40 PM
Wednesday 2/9
Sunny
100°
78°
3%
⌄
Wind 11 mph W
Gusts 24 mph
UV index 9 – Very high
Precip chance 3%
Sunrise 6:39 AM
Sunset 7:39 PM
Thursday 3/9
Mostly cloudy
98°
78°
12%
⌄
Wind 9 mph W
Gusts 16 mph
UV index 8 – Very high
Precip chance 12%
Sunrise 6:40 AM
Sunset 7:37 PM
Friday 4/9
Mostly cloudy
93°
72°
0.19 in
⌄
Wind 8 mph NW
Gusts 15 mph
UV index 8 – Very high
Precip chance 75% · 0.19 in
Sunrise 6:41 AM
Sunset 7:35 PM
Saturday 5/9
Showers
74°
67°
0.04 in
⌄
Wind 9 mph NE
Gusts 14 mph
UV index 5 – Moderate
Precip chance 74% · 0.04 in
Sunrise 6:42 AM
Sunset 7:34 PM
Sunday 6/9
Partly cloudy
76°
64°
30%
⌄
Wind 9 mph NE
Gusts 15 mph
UV index 5 – Moderate
Precip chance 30%
Sunrise 6:43 AM
Sunset 7:32 PM
Monday 7/9
Partly cloudy
82°
63°
10%
⌄
Wind 6 mph NE
Gusts 10 mph
UV index 7 – High
Precip chance 10%
Sunrise 6:43 AM
Sunset 7:31 PM
Tuesday 8/9
Showers
68°
56°
0.52 in
⌄
Wind 6 mph N
Gusts 19 mph
UV index 4 – Moderate
Precip chance 89% · 0.52 in
Sunrise 6:44 AM
Sunset 7:29 PM
10-day outlook for Herndon
Over the next ten days Herndon peaks at 100° on Wednesday and bottoms out at 61° on Wednesday. The second half of the period runs about 9° warmer than the first — the pattern is trending up. Add it up and about 1.0 in of precipitation falls over the period, spread across 2 unsettled days, with Thursday the most likely (78%).