Live Weather & Forecast
Weather in Fairfax
Virginia, United States · Real-time conditions & 3-day outlook
20°C
Feels like 20°C
68°F / Feels 68°F
Partly cloudy
Fairfax, Virginia
🌞 Daytime
Updated: 2026-04-12 13:30
Humidity
42%
Wind
15.1 km/h S
Wind Gust
17.4 km/h
Pressure
1029 mb
Visibility
16 km
UV Index
7
(High)
Precipitation
0 mm
Cloud Cover
75%
Dew Point
5.8°C
Wind Degree
169°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
183.9 μg/m³
NO₂
4.4 μg/m³
O₃
129 μg/m³
SO₂
3.3 μg/m³
PM 2.5
7.8 μg/m³
PM 10
8.2 μg/m³
Today's Hourly Forecast
24-hour breakdown for Fairfax, Virginia
12 AM
12°
Clear
1 AM
11°
Clear
2 AM
10°
Clear
3 AM
10°
Clear
4 AM
9°
Clear
5 AM
9°
Clear
6 AM
8°
Clear
7 AM
9°
Sunny
8 AM
10°
Sunny
9 AM
12°
Sunny
10 AM
14°
Sunny
11 AM
17°
Sunny
12 PM
18°
Sunny
1 PM
20°
Partly cloudy
2 PM
20°
Sunny
3 PM
23°
Sunny
4 PM
24°
Sunny
5 PM
23°
Sunny
6 PM
21°
Sunny
7 PM
19°
Sunny
8 PM
17°
Overcast
9 PM
16°
Clear
10 PM
15°
Clear
11 PM
14°
Clear
3-Day Forecast
Daily overview for Fairfax, Virginia
Today
Sunny
25°
/
8°
🌧️ 0% chance of rain
💧 Avg. humidity: 57%
💨 Max wind: 16.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:37 AM
🌇 Sunset: 07:44 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Cloudy
29°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 65%
💨 Max wind: 24.1 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:35 AM
🌇 Sunset: 07:45 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Cloudy
30°
/
18°
🌧️ 0% chance of rain
💧 Avg. humidity: 46%
💨 Max wind: 13 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:34 AM
🌇 Sunset: 07:46 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Fairfax
Plan your trip to Fairfax, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Fairfax?
Current conditions in Fairfax: Partly cloudy, temperature 20°C, humidity 42%.
What is the best time to visit Fairfax?
The best time to visit Fairfax is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Fairfax?
Fairfax is located at approximately 38.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Fairfax?
The wettest period in Fairfax is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Fairfax?
For visits to Fairfax during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Fairfax in?
Fairfax is located in United States, in the state of Virginia.
What are the public holidays in Fairfax in 2026?
View the 2026 public holidays for Fairfax on our Holidays page.
What are the GPS coordinates used for the weather forecast in Fairfax?
The weather forecast for Fairfax uses coordinates 38.8462, -77.3064.