Herndon, VA 20172 Hourly Weather

Fairfax County2:20 PM EDT38.97°N, 77.39°W

Next 48 hours

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 11 AM 35° 40° 45° 50° 55° 60° 65° %
TemperatureFeels likeChance of precipitationNight
Wednesday, October 2110 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
2 PM Sunny 62° 62° 0% 0.00 in N 9 G17 44% 40° 3% 4
3 PM Sunny 63° 63° 0% 0.00 in N 9 G17 41% 39° 4% 3
4 PM Sunny 63° 63° 0% 0.00 in N 8 G16 39% 38° 6% 1
5 PM Sunny 62° 62° 0% 0.00 in N 7 G15 41% 38° 4% 0
6 PM Clear 59° 59° 0% 0.00 in N 6 G13 47% 39° 5% 0
7 PM Clear 56° 56° 0% 0.00 in N 6 53% 39° 0% 0
8 PM Clear 51° 51° 0% 0.00 in N 5 66% 40° 2% 0
9 PM Clear 50° 48° 0% 0.00 in N 5 71% 41° 5% 0
10 PM Mostly Clear 48° 46° 0% 0.00 in N 5 80% 42° 14% 0
11 PM Mostly Clear 46° 44° 0% 0.00 in N 5 89% 43° 12% 0
Thursday, October 2224 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 45° 43° 0% 0.00 in N 5 93% 43° 8% 0
1 AM Mostly Clear 44° 41° 0% 0.00 in NW 5 G10 93% 42° 7% 0
2 AM Mostly Clear 44° 41° 0% 0.00 in NW 5 G10 89% 41° 7% 0
3 AM Mostly Clear 43° 40° 0% 0.00 in NW 5 G10 89% 40° 10% 0
4 AM Clear 42° 38° 0% 0.00 in NW 6 G12 89% 39° 2% 0
5 AM Clear 42° 38° 0% 0.00 in NW 6 G12 89% 39° 4% 0
6 AM Sunny 41° 37° 0% 0.00 in NW 6 G13 89% 38° 3% 0
7 AM Sunny 40° 35° 0% 0.00 in NW 7 G13 89% 37° 3% 0
8 AM Sunny 41° 36° 0% 0.00 in NW 7 G14 82% 36° 3% 0
9 AM Sunny 45° 41° 0% 0.00 in NW 8 G15 70% 36° 1% 1
10 AM Sunny 51° 51° 0% 0.00 in NW 8 G16 54% 35° 2% 2
11 AM Sunny 56° 56° 0% 0.00 in NW 9 G17 45% 35° 3% 3
12 PM Sunny 59° 59° 0% 0.00 in NW 10 G18 40% 35° 3% 4
1 PM Sunny 61° 61° 0% 0.00 in NW 10 G20 38% 35° 3% 4
2 PM Sunny 64° 64° 0% 0.00 in NW 10 G20 35% 36° 4% 4
3 PM Sunny 64° 64° 0% 0.00 in NW 10 G20 37% 37° 4% 3
4 PM Sunny 64° 64° 0% 0.00 in N 10 G20 38% 38° 2% 1
5 PM Sunny 63° 63° 0% 0.00 in N 9 G18 43% 40° 3% 0
6 PM Clear 61° 61° 0% 0.00 in N 8 G16 48% 41° 0% 0
7 PM Clear 58° 58° 0% 0.00 in N 7 G14 57% 43° 0% 0
8 PM Clear 54° 54° 0% 0.00 in N 6 G13 66% 43° 1% 0
9 PM Clear 53° 53° 0% 0.00 in N 6 G13 71% 44° 0% 0
10 PM Clear 52° 52° 0% 0.00 in N 6 G13 77% 45° 2% 0
11 PM Clear 50° 48° 0% 0.00 in N 6 G13 86% 46° 3% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 49° 47° 0% 0.00 in N 6 G14 89% 46° 4% 0
1 AM Clear 49° 46° 0% 0.00 in N 7 G14 89% 46° 5% 0
2 AM Mostly Clear 48° 45° 0% 0.00 in N 7 G15 93% 46° 6% 0
3 AM Mostly Clear 47° 44° 0% 0.00 in N 7 G15 96% 46° 6% 0
4 AM Mostly Clear 46° 42° 0% 0.00 in N 7 G15 100% 46° 6% 0
5 AM Mostly Clear 45° 41° 0% 0.00 in N 7 G15 100% 45° 6% 0
6 AM Sunny 43° 39° 0% 0.00 in N 7 G15 100% 43° 4% 0
7 AM Sunny 43° 39° 0% 0.00 in N 7 G14 100% 43° 3% 0
8 AM Sunny 43° 39° 0% 0.00 in N 7 G14 96% 42° 1% 0
9 AM Sunny 46° 42° 0% 0.00 in N 7 G14 83% 41° 2% 1
10 AM Sunny 49° 46° 0% 0.00 in N 8 G14 74% 41° 3% 2
11 AM Sunny 53° 53° 0% 0.00 in NE 8 G14 61% 40° 4% 3
12 PM Sunny 56° 56° 0% 0.00 in NE 8 53% 39° 4% 4
1 PM Sunny 58° 58° 0% 0.00 in NE 7 G13 45% 37° 5% 4
2 PM Sunny 59° 59° 0% 0.00 in NE 6 G12 42% 36° 5% 3
3 PM Sunny 60° 60° 0% 0.00 in NE 6 G12 41% 36° 6% 2
4 PM Sunny 59° 59° 0% 0.00 in NE 5 G10 42% 36° 6% 1
5 PM Sunny 58° 58° 0% 0.00 in NE 5 G10 44% 36° 7% 0
6 PM Mostly Clear 55° 55° 0% 0.00 in NE 5 51% 37° 7% 0
7 PM Mostly Clear 52° 52° 0% 0.00 in NE 3 G8 56% 37° 7% 0
8 PM Mostly Clear 48° 47° 0% 0.00 in NE 3 68% 38° 7% 0
9 PM Mostly Clear 46° 46° 0% 0.00 in NE 2 76% 39° 7% 0
10 PM Mostly Clear 44° 44° 0% 0.00 in NE 2 86% 40° 8% 0
11 PM Mostly Clear 43° 43° 0% 0.00 in NE 1 89% 40° 8% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 42° 42° 0% 0.00 in NE 1 93% 40° 7% 0
1 AM Mostly Clear 41° 41° 0% 0.00 in NE 1 92% 39° 6% 0
2 AM Clear 40° 40° 0% 0.00 in NE 1 96% 39° 5% 0
3 AM Mostly Clear 39° 39° 0% 0.00 in NE 1 100% 39° 6% –
4 AM Mostly Clear 38° 38° 0% 0.00 in N 1 100% 38° 6% –
5 AM Mostly Clear 38° 38° 0% 0.00 in N 1 100% 38° 7% –
6 AM Patchy Frost 37° 37° 0% 0.00 in N 1 100% 37° 6% –
7 AM Patchy Frost 36° 36° 0% 0.00 in N 2 100% 36° 6% –
8 AM Patchy Frost 37° 37° 0% – N 2 100% 37° 5% –
9 AM Sunny 41° 41° 0% – N 2 89% 38° 4% –
10 AM Sunny 47° 47° 0% – NE 1 74% 39° 4% –
11 AM Sunny 52° 52° 0% – E 1 63% 40° 3% –
12 PM Sunny 55° 55° 0% – E 1 57% 40° 4% –
1 PM Sunny 57° 57° 0% – E 2 51% 39° 5% –
2 PM Sunny 59° 59° 0% – SE 2 45% 38° 6% –
3 PM Sunny 60° 60° 0% – SE 2 44% 38° 9% –
4 PM Sunny 60° 60° 0% – E 2 44% 38° 12% –
5 PM Sunny 59° 59° 0% – E 2 47% 39° 15% –
6 PM Mostly Clear 56° 56° 0% – E 2 55% 40° 13% –
7 PM Mostly Clear 52° 52° 0% – E 2 66% 41° 12% –
8 PM Mostly Clear 51° 51° 0% – E 2 71% 42° 10% –
9 PM Mostly Clear 48° 48° 0% – E 2 83% 43° 10% –
10 PM Mostly Clear 46° 46° 0% – E 1 93% 44° 10% –
11 PM Mostly Clear 44° 44° 0% – SE 1 100% 44° 10% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 43° 43° 0% – E 1 100% 43° 10% –
1 AM Mostly Clear 42° 42° 0% – Calm 100% 42° 10% –
2 AM Mostly Clear 42° 42° 0% – Calm 100% 42° 6% –
3 AM Mostly Clear 41° 41° 0% – Calm 100% 41° 6% –
4 AM Mostly Clear 41° 41° 0% – Calm 100% 41° 6% –
5 AM Mostly Clear 40° 40° 0% – Calm 100% 40° 6% –
6 AM Sunny 39° 39° 0% – Calm 100% 39° 6% –
7 AM Sunny 39° 39° 0% – N 1 100% 39° 6% –
8 AM Sunny 40° 40° 0% – N 1 96% 39° 10% –
9 AM Sunny 44° 44° 0% – N 1 89% 41° 10% –
10 AM Sunny 49° 49° 0% – E 1 80% 43° 10% –
11 AM Sunny 54° 54° 0% – SE 1 71% 45° 10% –
12 PM Sunny 58° 58° 0% – SE 1 62% 45° 10% –
1 PM Sunny 60° 60° 0% – S 2 55% 44° 10% –
2 PM Sunny 62° 62° 0% – S 2 50% 43° 4% –
3 PM Sunny 63° 63° 0% – S 2 48% 43° 4% –
4 PM Sunny 64° 64° 0% – S 2 46% 43° 4% –
5 PM Sunny 63° 63° 0% – S 2 50% 44° 4% –
6 PM Clear 61° 61° 0% – S 2 56% 45° 4% –
7 PM Clear 57° 57° 0% – SE 2 64% 45° 4% –
8 PM Mostly Clear 54° 54° 0% – SE 2 74% 46° 7% –
9 PM Mostly Clear 52° 52° 0% – SE 2 83% 47° 7% –
10 PM Mostly Clear 50° 50° 0% – S 1 89% 47° 7% –
11 PM Mostly Clear 48° 48° 0% – S 1 96% 47° 7% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 47° 47° 0% – S 1 100% 47° 7% –
1 AM Mostly Clear 46° 46° 0% – SW 1 100% 46° 7% –
2 AM Mostly Clear 45° 45° 0% – SW 1 100% 45° 6% –
3 AM Mostly Clear 44° 44° 0% – W 1 100% 44° 6% –
4 AM Mostly Clear 44° 44° 0% – W 1 100% 44° 6% –
5 AM Mostly Clear 43° 43° 0% – W 1 100% 43° 6% –
6 AM Sunny 42° 42° 0% – W 1 100% 42° 6% –
7 AM Sunny 41° 41° 0% – W 1 100% 41° 6% –
8 AM Sunny 42° 42° 0% – W 1 100% 42° 17% –
9 AM Sunny 46° 46° 0% – W 1 89% 43° 17% –
10 AM Sunny 51° 51° 0% – W 2 80% 45° 17% –
11 AM Sunny 56° 56° 0% – W 2 69% 46° 17% –
12 PM Sunny 60° 60° 0% – W 2 62% 47° 17% –
1 PM Sunny 64° 64° 0% – W 3 54% 47° 17% –
2 PM Sunny 66° 66° 0% – W 3 50% 47° 14% –
3 PM Sunny 67° 67° 0% – W 3 49% 47° 14% –
4 PM Sunny 67° 67° 0% – W 2 50% 48° 14% –
5 PM Sunny 66° 66° 0% – W 2 52% 48° 14% –
6 PM Mostly Clear 64° 64° 0% – W 2 58% 49° 14% –
7 PM Mostly Clear 61° 61° 0% – SW 2 65% 49° 14% –
8 PM Mostly Clear 58° 58° 0% – SW 2 75% 50° 20% –
9 PM Mostly Clear 56° 56° 0% – SW 2 80% 50° 20% –
10 PM Mostly Clear 54° 54° 0% – W 2 86% 50° 20% –
11 PM Mostly Clear 52° 52° 0% – W 2 93% 50° 20% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 51° 51° 0% – W 2 93% 49° 20% –
1 AM Mostly Clear 50° 50° 0% – W 2 96% 49° 20% –
2 AM Partly Cloudy 49° 49° 0% – W 2 96% 48° 28% –
3 AM Partly Cloudy 49° 49° 0% – NW 2 96% 48° 28% –
4 AM Partly Cloudy 48° 47° 0% – NW 3 96% 47° 28% –
5 AM Partly Cloudy 48° 47° 0% – NW 3 G8 96% 47° 28% –
6 AM Mostly Sunny 47° 46° 0% – NW 3 G9 96% 46° 28% –
7 AM Mostly Sunny 46° 44° 0% – NW 5 100% 46° 28% –
8 AM Mostly Sunny 47° 45° 0% – NW 5 G10 96% 46° 31% –
9 AM Mostly Sunny 50° 48° 0% – NW 5 G10 89% 47° 31% –
10 AM Mostly Sunny 54° 54° 0% – N 6 80% 48° 31% –
11 AM Mostly Sunny 58° 58° 0% – N 6 72% 49° 31% –
12 PM Mostly Sunny 61° 61° 0% – N 6 65% 49° 31% –
1 PM Mostly Sunny 63° 63° 0% – N 6 G12 60% 49° 31% –
2 PM Mostly Sunny 64° 64° 0% – NW 6 G12 58% 49° 37% –
3 PM Mostly Sunny 65° 65° 0% – N 6 G12 56% 49° 37% –
4 PM Mostly Sunny 66° 66° 0% – N 6 G12 54% 49° 37% –
5 PM Mostly Sunny 65° 65° 0% – N 6 56% 49° 37% –
6 PM Partly Cloudy 63° 63° 0% – N 6 60% 49° 37% –
7 PM Partly Cloudy 61° 61° 0% – N 5 67% 50° 37% –
8 PM Partly Cloudy 58° 58° 0% – N 5 75% 50° 38% –
9 PM Partly Cloudy 56° 56° 0% – N 5 80% 50° 38% –
10 PM Partly Cloudy 54° 54° 0% – N 3 G9 86% 50° 38% –
11 PM Partly Cloudy 52° 52° 0% – N 3 G9 93% 50° 38% –
Wednesday, October 281 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 51° 51° 0% – N 3 G9 96% 50° 38% –

National Weather Service forecast updated 3 hrs 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.