Fairfax Weather in July

During July, Fairfax experiences very high daytime temperatures of 30°C (86°F) and cooler nights around 20°C (68°F). Expect quite a bit of rainfall. Around 89 mm (3.5 in) is typical.

Rainfall in Fairfax in July

Records from the past 30 years suggest around 10 days of rain, with 89 mm (3.5 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Fairfax in July

If you're visiting Fairfax in July, expect highs of 30°C (86°F) and overnight lows around 20°C (68°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights drop to around 20°C (68°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. The average temperatures are warm, but some days will be hotter. Make sure to dress in light, breathable clothing and drink plenty of water.

Sunshine in Fairfax in July

Enjoy a sunny month with about 279 hours of sunshine, the clear skies make Fairfax even more beautiful.

Wind Speed in Fairfax in July

July sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

If you prefer enjoying temperate temperatures and rain-free days, August typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
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• May
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• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Fairfax's climate page.

Fairfax Temperature in July

Min Temperature 20°C (68°F)  

Max Temperature 30°C (86°F)  

Chance of Rain 35%  

Precipitation 89 mm (3.5 in)  

Rainy days 10 days  

Humidity 67% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 279 hours *  

Percentage Sunshine 62% *  

* Data from: Washington DC, the United States of America (23 KM, 14 Miles).

What to Wear in Fairfax in July

Warm but pleasant conditions in Fairfax in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Fairfax in July

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Fairfax's climate page.

More climate data for Fairfax

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Fairfax climate overview or explore weather in the United States of America.