Fairfax County (Herndon)
July
Weather in Fairfax County, Virginia for July 2027
Your guide to Fairfax County weather in July - trends and predictions
The climate of Fairfax County in July is notably wet, with an average of 15 rainy days, and a total of 315.9 mm of precipitation.
Is July a good time to visit Fairfax County? check out the best time to travel to Fairfax County page.
✨ Is July a good time to visit Fairfax County? – Ask the AI Weatherman
Rain 🌧️
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16
Dry days
15
Rainy days
0
Snow days
32°/22°
Temperatures
13 km/h
Avg max wind
71 %
Avg humidity
Fairfax County Weather July
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Temperatures trend during July in Fairfax County
See the weather trend as well as the moving average line
July weather in Fairfax County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Moderate rain | 36° /24° | 12.3 mm | 11.4 | |
| Jul. 2 |  Fog | 35° /23° | 0 mm | 9 | |
| Jul. 3 |  Sunny | 37° /24° | 0 mm | 11.4 | |
| Jul. 4 | Sunny | 37° /24° | 0.7 mm | 11.3 | |
| Jul. 5 |  Light rain | 34° /22° | 3.5 mm | 11.3 | |
| Jul. 6 | Light rain | 32° /22° | 9.2 mm | 10 | |
| Jul. 7 | Moderate rain | 31° /24° | 12 mm | 7 | |
| Jul. 8 |  Thundery outbreaks possible | 33° /23° | 57.3 mm | 11 | |
| Jul. 9 |  Heavy rain | 30° /22° | 40.4 mm | 7 | |
| Jul. 10 | Heavy rain | 29° /21° | 53.4 mm | 7 | |
| Jul. 11 | Light rain | 31° /21° | 2.8 mm | 10 | |
| Jul. 12 | Light rain | 31° /23° | 5.3 mm | 10 | |
| Jul. 13 | Light rain | 29° /21° | 7.2 mm | 8 | |
| Jul. 14 | Thundery outbreaks possible | 34° /21° | 0 mm | 9 | |
| Jul. 15 | Fog | 35° /22° | 0 mm | 10 | |
| Jul. 16 |  Heavy rain at times | 34° /24° | 5.9 mm | 11 | |
| Jul. 17 | Heavy rain | 35° /23° | 25.5 mm | 11 | |
| Jul. 18 | Moderate rain | 34° /23° | 10.9 mm | 11 | |
| Jul. 19 | Moderate rain | 30° /22° | 11.3 mm | 8 | |
| Jul. 20 |  Cloudy | 33° /21° | 0 mm | 11 | |
| Jul. 21 | Moderate rain | 31° /23° | 19.9 mm | 11 | |
| Jul. 22 |  Patchy rain possible | 30° /19° | 1.8 mm | 11 | |
| Jul. 23 |  Overcast | 29° /19° | 0 mm | 10.9 | |
| Jul. 24 | Mist | 32° /18° | 0 mm | 10.9 | |
| Jul. 25 | Light rain | 33° /22° | 3.1 mm | 10.9 | |
| Jul. 26 | Patchy rain possible | 31° /21° | 2.3 mm | 9 | |
| Jul. 27 | Moderate rain | 33° /23° | 13.8 mm | 9 | |
| Jul. 28 | Light rain | 34° /23° | 9.7 mm | 10.7 | |
| Jul. 29 | Mist | 32° /22° | 0 mm | 10.7 | |
| Jul. 30 | Fog | 34° /22° | 0 mm | 10.7 | |
| Jul. 31 | Light rain | 33° /21° | 7.6 mm | 9 | |
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Important Notice
Our weather forecast for Fairfax County in July is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Fairfax County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Fairfax County in July - FAQ
What are the expected maximum and minimum temperatures in Fairfax County during July?
During July, expect a variety of temperatures with highs around 32° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in Fairfax County during July?
Significant rainfall exceeding 315.9 mm is expected in Fairfax County during July, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Fairfax County during July?
The average wind speed in Fairfax County during July is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Fairfax County
Explore the daily rainfall trends and prepare for Fairfax Countys July weather 💧
Typically, Fairfax County has 15 rainy days in July with a total of 315.9 mm of rainfall.
UV exposure in Fairfax County during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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