Herndon, VA 20192 Hourly Weather

Fairfax County11:23 AM EDT38.83°N, 77.29°W

Next 48 hours

11 AM 2 PM 5 PM 8 PM 11 PM Thu Oct 22 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Fri Oct 23 2 AM 5 AM 8 AM 40° 45° 50° 55° 60° 65° %
TemperatureFeels likeChance of precipitationNight
Wednesday, October 2113 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
11 AM Sunny 54° 54° 0% 0.00 in N 8 G15 57% 39° 3% 3
12 PM Sunny 57° 57° 0% 0.00 in N 8 G16 49% 38° 3% 4
1 PM Sunny 60° 60° 0% 0.00 in N 9 G17 44% 38° 2% 5
2 PM Sunny 62° 62° 0% 0.00 in N 9 G17 41% 38° 4% 4
3 PM Sunny 63° 63° 0% 0.00 in N 9 G17 39% 38° 5% 3
4 PM Sunny 64° 64° 0% 0.00 in N 9 G17 37% 37° 8% 1
5 PM Sunny 62° 62° 0% 0.00 in N 8 G16 41% 38° 7% 0
6 PM Clear 60° 60° 0% 0.00 in N 7 G15 46% 39° 3% 0
7 PM Mostly Clear 57° 57° 0% 0.00 in N 6 G13 53% 40° 7% 0
8 PM Clear 53° 53° 0% 0.00 in N 5 G12 61% 40° 4% 0
9 PM Mostly Clear 51° 51° 0% 0.00 in N 5 G12 66% 40° 10% 0
10 PM Mostly Clear 50° 48° 0% 0.00 in N 5 G12 71% 41° 17% 0
11 PM Mostly Clear 49° 47° 0% 0.00 in N 6 G12 74% 41° 11% 0
Thursday, October 2224 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 48° 45° 0% 0.00 in N 6 G13 74% 40° 5% 0
1 AM Clear 47° 44° 0% 0.00 in N 7 G13 76% 40° 3% 0
2 AM Mostly Clear 47° 44° 0% 0.00 in N 7 G14 74% 39° 7% 0
3 AM Mostly Clear 45° 41° 0% 0.00 in N 7 G14 79% 39° 6% 0
4 AM Clear 45° 41° 0% 0.00 in NW 8 G14 79% 39° 3% 0
5 AM Clear 44° 39° 0% 0.00 in NW 8 G14 79% 38° 4% 0
6 AM Sunny 43° 38° 0% 0.00 in NW 8 G15 79% 37° 7% 0
7 AM Sunny 43° 38° 0% 0.00 in NW 8 G15 76% 36° 2% 0
8 AM Sunny 43° 38° 0% 0.00 in NW 8 G16 73% 35° 3% 0
9 AM Sunny 47° 43° 0% 0.00 in NW 9 G17 63% 35° 1% 1
10 AM Sunny 52° 52° 0% 0.00 in N 9 G17 52% 35° 2% 2
11 AM Sunny 56° 56° 0% 0.00 in N 10 G18 42% 33° 4% 3
12 PM Sunny 59° 59° 0% 0.00 in N 10 G20 39% 34° 2% 4
1 PM Sunny 62° 62° 0% 0.00 in NW 10 G20 35% 34° 2% 5
2 PM Sunny 64° 64° 0% 0.00 in NW 10 G20 34% 35° 3% 4
3 PM Sunny 64° 64° 0% 0.00 in NW 10 G20 35% 36° 3% 3
4 PM Sunny 64° 64° 0% 0.00 in N 10 G20 37% 37° 2% 1
5 PM Sunny 65° 65° 0% 0.00 in N 9 G18 38% 39° 2% 0
6 PM Clear 62° 62° 0% 0.00 in N 8 G17 44% 40° 1% 0
7 PM Clear 59° 59° 0% 0.00 in N 7 G15 53% 42° 0% 0
8 PM Clear 57° 57° 0% 0.00 in N 6 G14 59% 43° 0% 0
9 PM Clear 54° 54° 0% 0.00 in N 7 G14 69% 44° 1% 0
10 PM Clear 53° 53° 0% 0.00 in N 7 G14 74% 45° 2% 0
11 PM Clear 53° 53° 0% 0.00 in N 7 G14 74% 45° 2% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 52° 52° 0% 0.00 in N 7 G15 77% 45° 3% 0
1 AM Clear 51° 51° 0% 0.00 in N 8 G15 80% 45° 3% 0
2 AM Clear 50° 47° 0% 0.00 in N 8 G16 83% 45° 4% 0
3 AM Clear 49° 46° 0% 0.00 in N 8 G16 86% 45° 4% 0
4 AM Clear 48° 44° 0% 0.00 in N 9 G16 86% 44° 4% 0
5 AM Clear 47° 43° 0% 0.00 in N 9 G16 89% 44° 4% 0
6 AM Sunny 45° 40° 0% 0.00 in N 9 G16 96% 44° 3% 0
7 AM Sunny 45° 41° 0% 0.00 in N 8 G15 93% 43° 3% 0
8 AM Sunny 45° 41° 0% 0.00 in N 8 G15 89% 42° 2% 0
9 AM Sunny 48° 44° 0% 0.00 in N 8 G15 77% 41° 3% 1
10 AM Sunny 51° 51° 0% 0.00 in N 8 G14 66% 40° 5% 2
11 AM Sunny 54° 54° 0% 0.00 in NE 8 G14 57% 39° 6% 3
12 PM Sunny 56° 56° 0% 0.00 in NE 8 51% 38° 6% 4
1 PM Sunny 58° 58° 0% 0.00 in NE 7 G13 44% 36° 7% 4
2 PM Sunny 59° 59° 0% 0.00 in NE 7 40% 35° 7% 4
3 PM Sunny 59° 59° 0% 0.00 in NE 7 39% 34° 7% 2
4 PM Sunny 59° 59° 0% 0.00 in NE 6 39% 34° 8% 1
5 PM Sunny 58° 58° 0% 0.00 in NE 6 40% 34° 8% 0
6 PM Mostly Clear 55° 55° 0% 0.00 in NE 5 47% 35° 8% 0
7 PM Mostly Clear 52° 52° 0% 0.00 in NE 5 56% 37° 9% 0
8 PM Mostly Clear 49° 48° 0% 0.00 in NE 3 66% 38° 9% 0
9 PM Mostly Clear 48° 47° 0% 0.00 in NE 3 68% 38° 8% 0
10 PM Mostly Clear 47° 47° 0% 0.00 in NE 2 71% 38° 8% 0
11 PM Mostly Clear 46° 46° 0% 0.00 in NE 2 73% 38° 7% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 45° 45° 0% 0.00 in NE 2 76% 38° 7% 0
1 AM Mostly Clear 44° 44° 0% 0.00 in NE 1 76% 37° 6% 0
2 AM Mostly Clear 43° 43° 0% 0.00 in NE 1 79% 37° 6% 0
3 AM Mostly Clear 42° 42° 0% 0.00 in NE 1 82% 37° 6% –
4 AM Mostly Clear 41° 41° 0% 0.00 in NE 2 85% 37° 6% –
5 AM Mostly Clear 40° 40° 0% 0.00 in N 2 89% 37° 6% –
6 AM Sunny 39° 39° 0% 0.00 in N 2 92% 37° 6% –
7 AM Sunny 38° 36° 0% 0.00 in N 3 96% 37° 7% –
8 AM Sunny 39° 37° 0% – N 3 92% 37° 7% –
9 AM Sunny 43° 41° 0% – NE 3 82% 38° 6% –
10 AM Sunny 48° 48° 0% – NE 2 71% 39° 5% –
11 AM Sunny 53° 53° 0% – E 2 59% 39° 4% –
12 PM Sunny 56° 56° 0% – E 2 53% 39° 5% –
1 PM Sunny 58° 58° 0% – E 2 47% 38° 7% –
2 PM Sunny 59° 59° 0% – E 2 44% 37° 8% –
3 PM Sunny 60° 60° 0% – E 2 42% 37° 9% –
4 PM Sunny 60° 60° 0% – E 2 42% 37° 11% –
5 PM Sunny 59° 59° 0% – E 2 44% 37° 12% –
6 PM Mostly Clear 57° 57° 0% – E 2 49% 38° 11% –
7 PM Mostly Clear 53° 53° 0% – E 2 61% 40° 11% –
8 PM Mostly Clear 52° 52° 0% – E 2 66% 41° 10% –
9 PM Mostly Clear 50° 50° 0% – E 2 71% 41° 10% –
10 PM Mostly Clear 48° 48° 0% – E 1 80% 42° 10% –
11 PM Mostly Clear 46° 46° 0% – E 1 86% 42° 10% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 45° 45° 0% – E 1 89% 42° 10% –
1 AM Mostly Clear 45° 45° 0% – E 1 86% 41° 10% –
2 AM Clear 44° 44° 0% – E 1 89% 41° 4% –
3 AM Clear 43° 43° 0% – E 1 93% 41° 4% –
4 AM Clear 42° 42° 0% – N 1 96% 41° 4% –
5 AM Clear 41° 41° 0% – N 1 100% 41° 4% –
6 AM Sunny 40° 40° 0% – N 1 100% 40° 4% –
7 AM Sunny 39° 39° 0% – N 2 100% 39° 4% –
8 AM Sunny 40° 40° 0% – N 2 100% 40° 11% –
9 AM Sunny 44° 44° 0% – N 2 89% 41° 11% –
10 AM Sunny 50° 50° 0% – NE 2 77% 43° 11% –
11 AM Sunny 55° 55° 0% – E 2 66% 44° 11% –
12 PM Sunny 58° 58° 0% – E 2 59% 44° 11% –
1 PM Sunny 61° 61° 0% – SE 2 53% 44° 11% –
2 PM Sunny 62° 62° 0% – S 2 50% 43° 5% –
3 PM Sunny 63° 63° 0% – S 2 48% 43° 5% –
4 PM Sunny 64° 64° 0% – S 2 46% 43° 5% –
5 PM Sunny 63° 63° 0% – S 2 48% 43° 5% –
6 PM Clear 61° 61° 0% – SE 2 53% 44° 5% –
7 PM Clear 59° 59° 0% – SE 1 60% 45° 5% –
8 PM Mostly Clear 56° 56° 0% – SE 1 69% 46° 6% –
9 PM Mostly Clear 54° 54° 0% – SE 1 74% 46° 6% –
10 PM Mostly Clear 52° 52° 0% – SE 1 80% 46° 6% –
11 PM Mostly Clear 50° 50° 0% – S 1 86% 46° 6% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 49° 49° 0% – S 1 89% 46° 6% –
1 AM Mostly Clear 48° 48° 0% – SW 1 89% 45° 6% –
2 AM Mostly Clear 47° 47° 0% – SW 1 93% 45° 6% –
3 AM Mostly Clear 46° 46° 0% – SW 1 93% 44° 6% –
4 AM Mostly Clear 45° 45° 0% – W 2 96% 44° 6% –
5 AM Mostly Clear 44° 44° 0% – W 2 96% 43° 6% –
6 AM Sunny 43° 43° 0% – W 2 100% 43° 6% –
7 AM Sunny 42° 42° 0% – W 2 100% 42° 6% –
8 AM Sunny 43° 43° 0% – W 2 100% 43° 15% –
9 AM Sunny 47° 47° 0% – W 2 89% 44° 15% –
10 AM Sunny 52° 52° 0% – W 2 74% 44° 15% –
11 AM Sunny 57° 57° 0% – W 2 64% 45° 15% –
12 PM Sunny 61° 61° 0% – W 2 56% 45° 15% –
1 PM Sunny 64° 64° 0% – W 3 52% 46° 15% –
2 PM Sunny 66° 66° 0% – W 3 48% 46° 11% –
3 PM Sunny 67° 67° 0% – W 3 47% 46° 11% –
4 PM Sunny 68° 68° 0% – W 2 45% 46° 11% –
5 PM Sunny 67° 67° 0% – W 2 47% 46° 11% –
6 PM Mostly Clear 65° 65° 0% – W 2 52% 47° 11% –
7 PM Mostly Clear 62° 62° 0% – SW 1 60% 48° 11% –
8 PM Mostly Clear 59° 59° 0% – SW 1 69% 49° 18% –
9 PM Mostly Clear 57° 57° 0% – SW 1 75% 49° 18% –
10 PM Mostly Clear 55° 55° 0% – W 2 80% 49° 18% –
11 PM Mostly Clear 54° 54° 0% – W 2 80% 48° 18% –
Tuesday, October 2723 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 53° 53° 0% – W 2 83% 48° 18% –
1 AM Mostly Clear 53° 53° 0% – W 3 80% 47° 18% –
2 AM Partly Cloudy 52° 52° 0% – W 3 83% 47° 28% –
3 AM Partly Cloudy 51° 51° 0% – W 3 G8 86% 47° 28% –
4 AM Partly Cloudy 50° 48° 0% – NW 5 86% 46° 28% –
5 AM Partly Cloudy 49° 47° 0% – NW 5 89% 46° 28% –
6 AM Mostly Sunny 48° 46° 0% – NW 5 G10 93% 46° 28% –
7 AM Mostly Sunny 48° 45° 0% – NW 6 93% 46° 28% –
8 AM Mostly Sunny 49° 47° 0% – NW 6 G12 89% 46° 31% –
9 AM Mostly Sunny 52° 52° 0% – NW 6 G12 83% 47° 31% –
10 AM Mostly Sunny 55° 55° 0% – N 6 G12 74% 47° 31% –
11 AM Mostly Sunny 59° 59° 0% – N 6 G12 67% 48° 31% –
12 PM Mostly Sunny 62° 62° 0% – N 6 G12 60% 48° 31% –
1 PM Mostly Sunny 64° 64° 0% – N 7 56% 48° 31% –
2 PM Mostly Sunny 65° 65° 0% – N 7 54% 48° 36% –
3 PM Mostly Sunny 66° 66° 0% – N 7 52% 48° 36% –
4 PM Mostly Sunny 67° 67° 0% – N 6 50% 48° 36% –
5 PM Mostly Sunny 66° 66° 0% – N 6 52% 48° 36% –
6 PM Partly Cloudy 64° 64° 0% – N 6 56% 48° 36% –
7 PM Partly Cloudy 62° 62° 0% – N 5 62% 49° 36% –
8 PM Partly Cloudy 59° 59° 0% – N 5 69% 49° 36% –
9 PM Partly Cloudy 57° 57° 0% – N 5 75% 49° 36% –
10 PM Partly Cloudy 55° 55° 0% – N 5 77% 48° 36% –

National Weather Service forecast updated 30 min ago. Precipitation amounts are the forecast liquid equivalent for each hour.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.