Herndon, VA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Herndon, VA in one place.
Sunny, with a high near 89.
Local Weather Overview
This forecast page for Herndon, VA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 12, 2026 1:57 AM EDT.
The active forecast window currently covers Jul 14 to Jul 18, 2026 for Herndon, VA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 18, 2026
- Latest sync
- Jul 12, 2026 1:57 AM EDT
- Forecast office
- LWX
- Source
- NOAA / NWS
Daily Outlook
This Week in Herndon
Wednesday looks like the warmest upcoming period in Herndon at 97 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Wednesday at about 3 to 9 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 12, 2026 1:57 AM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- LWX
- Radar station
- KLWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 70.
Sunny, with a high near 97.
Mostly clear, with a low around 74.
Sunny, with a high near 94.
Partly cloudy, with a low around 73.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
A slight chance of rain showers before 8am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
89°F |
1 to 5 mph
W
|
|
Tuesday Night
Jul 14
|
Clear
|
70°F |
5 mph
SW
|
|
Wednesday
Jul 15
|
Sunny
|
97°F |
3 to 9 mph
W
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
74°F |
5 to 8 mph
NW
|
|
Thursday
Jul 16
|
Sunny
|
94°F |
5 to 8 mph
NW
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
73°F |
3 to 8 mph
W
|
|
Friday
Jul 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
94°F |
3 to 7 mph
NW
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
71°F |
2 to 6 mph
NW
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
91°F |
3 to 8 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Herndon.
