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 GMT-4
Current Conditions
- Temperature: 79° (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 | Cloudy | 74° |
| 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° |
| 22:00 | Partly Cloudy Night | 76° |
| 23:00 | Partly Cloudy Night | 74° |
Wind
- Speed: 4 mph NNE
Humidity
- Humidity: 81%
Air Quality
- Index: 63 - Moderate
- Dew Point: 71°
- Pressure: 30.04 in
- UV Index: 0 of 11
- Visibility: 10 mi
- Moon Phase: Waxing Crescent
Daily Forecast
| Date | Condition | Rain Chance | 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
- Index: 63
- Level: 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.