Weather forecast and conditions for Herndon, 20170, Virginia, United States - The Weather Channel | weather.com

Herndon Weather

Location

Herndon, 20170, Virginia, United States

As of 9:02 PM EDT

Now

79°
Cloudy
Feels Like 77°
High 85°
Low 69°
Chance of Rain 8%

Today's outlook

Tonight's low temperature will be nearly the same as last night's.

Hourly Forecast

Time Condition Temperature
00:00 Cloudy 77°
01:00 Mostly Cloudy Night 77°
02:00 Mostly Cloudy Night 76°
03:00 Mostly Cloudy Night 76°
04:00 Mostly Cloudy Night 77°
05:00 Mostly Cloudy Night 76°
06:00 Mostly Cloudy Night 75°
07:00 Partly Cloudy Day 70°
08:00 Partly Cloudy Day 76°
09:00 Mostly Cloudy Day 77°
10:00 Mostly Cloudy Day 77°
11:00 Cloudy 79°
12:00 Cloudy 78°
13:00 Cloudy 77°
14:00 Mostly Cloudy Day 76°
15:00 Mostly Cloudy Day 78°
16:00 Partly Cloudy Day 82°
17:00 Mostly Cloudy Day 82°
18:00 Mostly Cloudy Day 82°
19:00 Mostly Cloudy Day 80°
20:00 Cloudy 78°

Wind

4 mph NNE

Humidity

81%

Air Quality

63 - Moderate

Dew Point

71°

Pressure

30.04 in

UV Index

0 of 11

Visibility

10 mi

Moon Phase

Waxing Crescent
Sunrise 06:21
Sunset 20:05

Daily Forecast

Date Summary Rain Probability Low High
Tonight Scattered Showers Night 39% 69° 85°
Sat 15 Partly Cloudy Day 7% 73° 87°
Sun 16 Thunderstorms 89% 74° 81°
Mon 17 Partly Cloudy Day 15% 68° 90°
Tue 18 Mostly Clear Day 5% 65° 85°
Wed 19 Mostly Clear Day 7% 72° 88°
Thu 20 Scattered Thunderstorms 50% 65° 87°

Air Quality Index

63 - Moderate
Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Health & Activities