Herndon (VA)
July
Weather in Herndon, Virginia for July 2026
Your guide to Herndon weather in July - trends and predictions
In general, the average temperature in Herndon at the beginning of July is 32.1 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 34.7 °F by the end of July.
The climate of Herndon in July is notably wet, with an average of 13 rainy days, and a total of 445 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
13
Rainy days
0
Snow days
32°/23°
Temperatures
13 km/h
Avg max wind
72 %
Avg humidity
Herndon Weather July
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Temperatures trend during July in Herndon
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July weather in Herndon day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Moderate or heavy rain shower | 34° /25° | 24.6 mm | 12 | |
| Jul. 2 |  Fog | 30° /22° | 0 mm | 5 | |
| Jul. 3 |  Sunny | 33° /22° | 0 mm | 13 | |
| Jul. 4 | Sunny | 32° /21° | 0 mm | 12 | |
| Jul. 5 |  Partly cloudy | 31° /22° | 0 mm | 13 | |
| Jul. 6 | Sunny | 32° /21° | 0 mm | 12 | |
| Jul. 7 |  Light rain shower | 33° /25° | 4.3 mm | 10 | |
| Jul. 8 |  Thundery outbreaks possible | 36° /25° | 111.5 mm | 13 | |
| Jul. 9 | Fog | 31° /22° | 51.7 mm | 6 | |
| Jul. 10 | Light rain shower | 27° /22° | 104.4 mm | 2 | |
| Jul. 11 | Fog | 32° /22° | 0 mm | 7 | |
| Jul. 12 |  Overcast | 34° /24° | 0 mm | 12 | |
| Jul. 13 | Light rain shower | 27° /24° | 14.4 mm | 4 | |
| Jul. 14 | Thundery outbreaks possible | 33° /24° | 0 mm | 5 | |
| Jul. 15 | Fog | 32° /23° | 0 mm | 7 | |
| Jul. 16 |  Heavy rain at times | 31° /24° | 10.9 mm | 10 | |
| Jul. 17 |  Heavy rain | 34° /24° | 51 mm | 9 | |
| Jul. 18 | Light rain shower | 32° /24° | 4.8 mm | 10 | |
| Jul. 19 | Light rain shower | 29° /22° | 21.8 mm | 3 | |
| Jul. 20 |  Cloudy | 34° /24° | 0 mm | 12 | |
| Jul. 21 | Overcast | 29° /23° | 0 mm | 9 | |
| Jul. 22 | Cloudy | 28° /18° | 0 mm | 12 | |
| Jul. 23 | Overcast | 28° /21° | 0 mm | 10 | |
| Jul. 24 | Mist | 34° /21° | 0 mm | 11 | |
| Jul. 25 | Light rain shower | 37° /24° | 5.1 mm | 12 | |
| Jul. 26 | Overcast | 32° /24° | 0 mm | 8 | |
| Jul. 27 | Moderate or heavy rain shower | 34° /25° | 25.5 mm | 6 | |
| Jul. 28 | Sunny | 36° /25° | 0 mm | 11 | |
| Jul. 29 | Mist | 34° /25° | 0 mm | 10 | |
| Jul. 30 | Fog | 37° /25° | 0 mm | 10 | |
| Jul. 31 | Overcast | 33° /23° | 15.1 mm | 6 | |
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Important Notice
Our weather forecast for Herndon 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 Herndon forecast closer to your planned date for the most up-to-date weather information.
Change Month
Herndon in July - FAQ
What are the expected maximum and minimum temperatures in Herndon during July?
During July, expect a variety of temperatures with highs around 32° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Herndon during July?
Significant rainfall exceeding 445 mm is expected in Herndon during July, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Herndon during July?
The average wind speed in Herndon during July is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Herndon
Explore the daily rainfall trends and prepare for Herndons July weather 💧
Typically, Herndon has 13 rainy days in July with a total of 445 mm of rainfall.
UV exposure in Herndon during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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