Support Time.now: Join our Premium Plan for an ad-free experience! Support Us: Go Premium Ad-Free!

Weather in Fairfax, United States 🇺🇸

Current Weather in Fairfax

Sunny
36°C
Feels like 42°C. Sunny.
🌬️ 12 km/h NNW
💧 46% Humidity
🧭 1010 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 2.6
🌡️ Dew Point: 23°C
🌅 Sunrise: 06:41 AM
🌇 Sunset: 07:35 PM
Map Overlays:

Fairfax currently sits at 36°C, sunny, feeling like 42°C. Relative humidity is 46%, with winds around 12 km/h, and the UV index is 3 (moderate). In the days ahead, expect temperatures in Fairfax from about 19°C to 36°C.

Hourly Forecast for Fairfax

19:00
Sunny
32°
3%
20:00
Overcast
30°
13%
21:00
Overcast
28°
13%
22:00
Cloudy
28°
10%
23:00
Overcast
27°
15%
00:00
Light rain shower
25°
45%
01:00
Light rain shower
24°
74%
02:00
Overcast
24°
30%
03:00
Overcast
24°
30%
04:00
Partly Cloudy
23°
18%
05:00
Patchy rain nearby
23°
35%
06:00
Mist
23°
38%
07:00
Mist
23°
38%
08:00
Overcast
23°
32%
09:00
Moderate or heavy rain shower
23°
89%
10:00
Light rain shower
22°
58%
11:00
Light rain shower
23°
76%
12:00
Patchy rain nearby
24°
31%
13:00
Patchy rain nearby
26°
20%
14:00
Light rain shower
27°
41%
15:00
Light rain shower
27°
55%
16:00
Moderate rain at times
27°
46%
17:00
Patchy rain nearby
27°
24%
18:00
Patchy rain nearby
26°
15%

14-Day Forecast for Fairfax

Fri, Sep 04
Sunny Sunny
36° / 20°
Sat, Sep 05
Patchy rain nearby Patchy rain nearby
27° / 22°
Sun, Sep 06
Overcast Overcast
27° / 19°
Mon, Sep 07
Sunny Sunny
29° / 18°
Tue, Sep 08
Overcast Overcast
29° / 18°
Wed, Sep 09
Partly Cloudy Partly Cloudy
33° / 18°
Thu, Sep 10
Sunny Sunny
30° / 20°
Fri, Sep 11
Sunny Sunny
23° / 16°
Sat, Sep 12
Sunny Sunny
23° / 12°
Sun, Sep 13
Overcast Overcast
28° / 13°
Mon, Sep 14
Overcast Overcast
32° / 19°
Tue, Sep 15
Sunny Sunny
34° / 23°
Wed, Sep 16
Sunny Sunny
38° / 24°
Thu, Sep 17
Sunny Sunny
41° / 28°

Additional Forecasts for Fairfax

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 117.0 μg/m³
O₃ (Ozone) 141.0 μg/m³
NO₂ (Nitrogen Dioxide) 1.0 μg/m³
SO₂ (Sulphur Dioxide) 1.6 μg/m³
PM2.5 (Fine particles) 8.8 μg/m³
PM10 (Coarse particles) 9.3 μg/m³

Historical Weather

Weather Forecasts for Other Cities in United States

Browse Weather in United States by cities in alphabetical order:

A B C D E F G H I J K L M N O P Q R S T V W

Weather in United States ›

Best Time to Be Outside in Fairfax Tomorrow

There is no good daylight window left in Fairfax today. Tomorrow, the most comfortable window looks like 07:00 to 10:00, when it is around 23°C. The next likely rain is around 01:00.

Frequently Asked Questions about Weather in Fairfax

What is the temperature in Fairfax right now?

The current temperature in Fairfax is 36°C (97°F), sunny (feels like 42°C).

What's the weather like in Fairfax right now?

Right now Fairfax has Sunny, humidity 46%, wind 12 km/h NNW.

What is today's forecast for Fairfax?

Today in Fairfax: high 36°C, low 20°C, sunny. Chance of rain: 57%.

What is the 7-day weather forecast for Fairfax?

Daily highs and lows for Fairfax:

  • 2026-09-04: 36°C / 20°C
  • 2026-09-05: 27°C / 22°C
  • 2026-09-06: 27°C / 19°C
  • 2026-09-07: 29°C / 18°C
  • 2026-09-08: 29°C / 18°C
  • 2026-09-09: 33°C / 18°C
  • 2026-09-10: 30°C / 20°C
Is it going to rain in Fairfax today?

There is a 57% chance of rain in Fairfax today. Total expected precipitation: 2.47 mm.

What is the wind speed in Fairfax right now?

Wind in Fairfax is currently 12 km/h (7 mph) from the NNW.

What is the UV index in Fairfax right now?

The UV index in Fairfax is currently 2.6 (low). Sun protection is recommended when the index is 3 or higher.

Weather forecasts for other major cities in 🇺🇸 United States: New York City · Los Angeles · Brooklyn · Chicago · Houston · Queens · Phoenix · Philadelphia · Manhattan · San Antonio · San Diego · The Bronx · Dallas · Jacksonville · Austin · Fort Worth · Columbus · Indianapolis · Charlotte · San Francisco · Seattle · Denver · Washington, D.C. · Washington · Nashville · El Paso · Oklahoma City · Detroit · Boston · Portland · New South Memphis · Memphis · Las Vegas · Milwaukee · Baltimore · South Boston · Albuquerque · Tucson · Fresno · Sacramento · Omaha · Kansas City · Long Beach · Mesa · Staten Island · Atlanta · Colorado Springs · Virginia Beach · Raleigh · Miami