Fairfax, VA Weather Forecast | 5 Day
Updated: Mon May 12th 2025 6:00 PM EDT
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Overcast
Mon 5-12
Overcast with a high of 73°F and a low of 54°F. Wind will be moderate, blowing around 11mph on average and gusts of 10.9mph at 7 PM. High humidity with average of 81% is anticipated, the maximum being 93% at 11 PM and 83% being its lowest at 7 PM. Barometric pressure is its highest of 30.17inHg at 7 PM, a lowest point of 30.14inHg at 11 PM with an avg 30.15inHg.
- HI: 73°F
- LO: 54°F
- Rainfall: 0%
- Snowfall: 0%
- Wind
10.1 mph - Humidity
81% avg. - UV Index
1.5 - Air QualityModerate
- Sunrise
05:59 AM - Sunset
08:12 PM - Moonrise
08:38 PM - Moonset
05:34 AM - Moon Phase
Full Moon

Heavy Rain
Tue 5-13
Heavy Rain with a high of 73°F and a low of 63°F. It will likey rain, having a 84% chance of a downpour with an estimated 1.92in. Wind will be moderate, blowing around 14mph on average and gusts of 20.6mph at 12 PM. High humidity with average of 94% is anticipated, the maximum being 99% at 11 PM and 78% being its lowest at 12 PM. Barometric pressure is its highest of 30.14inHg at 12 AM, a lowest point of 29.87inHg at 11 PM with an avg 30.04inHg.
- HI: 73°F
- LO: 63°F
- Rainfall: 84% | est. 1.92in
- Snowfall: 0%
- Wind
13.4 mph - Humidity
94% avg. - UV Index
0.1 - Air QualityGood
- Sunrise
05:58 AM - Sunset
08:13 PM - Moonrise
09:40 PM - Moonset
06:05 AM - Moon Phase
Waning Gibbous

Moderate Rain
Wed 5-14
Moderate Rain with a high of 77°F and a low of 63°F. It will likey rain, having a 87% chance of a downpour with an estimated 0.71in. Winds will be light at 9mph and gusts of 15.8mph at 9 PM. High humidity with average of 88% is anticipated, the maximum being 99% at 5 AM and 70% being its lowest at 3 PM. Barometric pressure is its highest of 29.96inHg at 11 PM, a lowest point of 29.87inHg at 5 PM with an avg 29.91inHg.
- HI: 77°F
- LO: 63°F
- Rainfall: 87% | est. 0.71in
- Snowfall: 0%
- Wind
8.1 mph - Humidity
88% avg. - UV Index
1.1 - Air QualityGood
- Sunrise
05:58 AM - Sunset
08:14 PM - Moonrise
10:39 PM - Moonset
06:44 AM - Moon Phase
Waning Gibbous

Heavy Rain
Thu 5-15
Heavy Rain with a high of 81°F and a low of 66°F. It will likey rain, having a 87% chance of a downpour with an estimated 1.83in. Winds will be light at 6mph and gusts of 9.9mph at 9 PM. High humidity with average of 84% is anticipated, the maximum being 99% at 5 AM and 56% being its lowest at 5 PM. Barometric pressure is its highest of 29.91inHg at 11 AM, a lowest point of 29.78inHg at 5 PM with an avg 29.86inHg.
- HI: 81°F
- LO: 66°F
- Rainfall: 87% | est. 1.83in
- Snowfall: 0%
- Wind
5.4 mph - Humidity
84% avg. - UV Index
1.7 - Air QualityModerate
- Sunrise
05:57 AM - Sunset
08:15 PM - Moonrise
11:34 PM - Moonset
07:32 AM - Moon Phase
Waning Gibbous

Moderate Rain
Fri 5-16
Moderate Rain with a high of 83°F and a low of 64°F. It will likey rain, having a 88% chance of a downpour with an estimated 0.26in. Winds will be light at 7mph and gusts of 13.2mph at 7 PM. High humidity with average of 83% is anticipated, the maximum being 98% at 7 AM and 54% being its lowest at 3 PM. Barometric pressure is its highest of 29.79inHg at 12 AM, a lowest point of 29.7inHg at 6 PM with an avg 29.75inHg.
- HI: 83°F
- LO: 64°F
- Rainfall: 88% | est. 0.26in
- Snowfall: 0%
- Wind
6.7 mph - Humidity
83% avg. - UV Index
0.1 - Air QualityModerate
- Sunrise
05:56 AM - Sunset
08:16 PM - Moonrise
No moonrise - Moonset
08:27 AM - Moon Phase
Waning Gibbous

Sunny
Sat 5-17
Sunny with a high of 84°F and a low of 63°F. Wind will be moderate, blowing around 14mph on average and gusts of 15.9mph at 2 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 91% at 5 AM and 40% being its lowest at 2 PM. Barometric pressure is its highest of 29.81inHg at 11 PM, a lowest point of 29.67inHg at 2 PM with an avg 29.72inHg.
- HI: 84°F
- LO: 63°F
- Rainfall: 0%
- Snowfall: 0%
- Wind
13.9 mph - Humidity
72% avg. - UV Index
6 - Air QualityTBA
- Sunrise
05:55 AM - Sunset
08:16 PM - Moonrise
12:21 AM - Moonset
09:29 AM - Moon Phase
Waning Gibbous
Currently
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73°F |
30.18 inHg.
Barometer 73%
Humidity S 16.2 mph Wind |
Overcast |