Fairfax, VA Weather Forecast

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Fairfax VA weather  - Light Rain - 76°F
Light Rain
76°F
Updated 3:59 pm
Feels Like 95°F
Humidity 93%
Wind SSW 3 mph
Barometer  30.15 in
Dew Point 74°F
Fairfax VA weather  - Light Rain - 24°C
Light Rain
24°C
Updated 3:59 pm
Feels Like 35°C
Humidity 93%
Wind SSW 5 km/h
Barometer  102.1 kPa
Dew Point 23°C

Fairfax Weather Forecast

THIS AFTERNOON TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT
Fairfax, VA Weather - This Afternoon Chance Of T-Storm Fairfax, VA Weather - Tonight Chance Of T-Storm Fairfax, VA Weather - Friday Partly Sunny Fairfax, VA Weather - Friday Night Partly Cloudy Fairfax, VA Weather - Saturday Partly Sunny Fairfax, VA Weather - Saturday Night Mostly Cloudy Fairfax, VA Weather - Sunday Partly Sunny Fairfax, VA Weather - Sunday Night Chance Of Showers Fairfax, VA Weather - Monday Chance Of Showers Fairfax, VA Weather - Monday Night Showers Fairfax, VA Weather - Tuesday Showers Fairfax, VA Weather - Tuesday Night Chance Of Showers
Chance of T-Storm Chance of T-Storm Partly Sunny Partly Cloudy Partly Sunny Mostly Cloudy Partly Sunny Chance of Showers Chance of Showers Showers Showers Chance of Showers
Hi: 89°FHi: 32°C
Lo: 71°FLo: 22°C Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C Hi: 79°FHi: 26°C
Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
Lo: 65°FLo: 18°C Hi: 79°FHi: 26°C
Lo: 61°FLo: 16°C Hi: 65°FHi: 18°C
Lo: 55°FLo: 13°C
POP: 50% POP: 50% POP: 50% POP: 50% POP: 60% POP: 60% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 226 PM EDT Thu Sep 17 2026 Fairfax, VA Weather - WeatherWorld.com

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Issued: 337 PM EDT Thu Sep 17 2026

Key Messages

  • 1) Shower and thunderstorm chances shift southward with a cold front through Friday, which will be followed by cooler temperatures.
  • 2) Showers and thunderstorms return at times Sunday into next week, with temperatures likely falling below normal.

Discussion

... KEY MESSAGE 1...Shower and thunderstorm chances shift southward with a cold front through Friday, which will be followed by cooler temperatures.

Height falls amidst a humid airmass resulted in showers and thunderstorms expanding ...