Fairfax, VA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fairfax, VA in one place.
Mostly sunny, with a high near 82. East wind 3 to 7 mph.
Local Weather Overview
This forecast page for Fairfax, 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 24, 2026 12:18 PM EDT.
The active forecast window currently covers Jul 24 to Jul 30, 2026 for Fairfax, VA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 24 to Jul 30, 2026
- Latest sync
- Jul 24, 2026 12:18 PM EDT
- Forecast office
- LWX
- Source
- NOAA / NWS
Daily Outlook
This Week in Fairfax
Tuesday looks like the warmest upcoming period in Fairfax at 89 degrees F.
Tonight is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Wednesday at about 10 mph NW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 24, 2026 12:18 PM EDT
- Coverage
- 7 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
Mostly cloudy, with a low around 64. East wind 1 to 7 mph.
Mostly sunny, with a high near 81. East wind around 5 mph.
Partly cloudy, with a low around 65. Southeast wind around 5 mph.
A slight chance of rain showers between 2pm and 5pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 86. Northeast wind around 3 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 89. Chance of precipitation is 60%.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
A slight chance of rain showers after 2pm. Sunny, with a high near 86. Chance of precipitation is 20%.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 24
|
Mostly Sunny
|
82°F |
3 to 7 mph
E
|
|
Tonight
Jul 24
|
Mostly Cloudy
|
64°F |
1 to 7 mph
E
|
|
Saturday
Jul 25
|
Mostly Sunny
|
81°F |
5 mph
E
|
|
Saturday Night
Jul 25
|
Partly Cloudy
|
65°F |
5 mph
SE
|
|
Sunday
Jul 26
|
Sunny then Slight Chance Showers And Thunderstorms
|
86°F |
3 mph
NE
|
|
Sunday Night
Jul 26
|
Slight Chance Showers And Thunderstorms
|
68°F |
3 mph
SW
|
|
Monday
Jul 27
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
88°F |
6 mph
SW
|
|
Monday Night
Jul 27
|
Chance Showers And Thunderstorms
|
70°F |
6 mph
SW
|
|
Tuesday
Jul 28
|
Showers And Thunderstorms Likely
|
89°F |
6 to 9 mph
SW
|
|
Tuesday Night
Jul 28
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
69°F |
6 to 9 mph
W
|
|
Wednesday
Jul 29
|
Mostly Sunny then Chance Showers And Thunderstorms
|
86°F |
10 mph
NW
|
|
Wednesday Night
Jul 29
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
67°F |
5 to 8 mph
NW
|
|
Thursday
Jul 30
|
Sunny then Slight Chance Rain Showers
|
86°F |
7 mph
NW
|
|
Thursday Night
Jul 30
|
Slight Chance Rain Showers then Mostly Clear
|
68°F |
5 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fairfax.
Nearby forecast pages are not available for this location yet.
