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United StatesThe weather in July in Fairfax
It's hot in July in Fairfax with an average temperature of 31°C. Temperatures this month range from a low of 30°C to a high of 34°C. At night, you can expect temperatures between 19°C and 22°C.
Looking for sun? July isn’t a good month to be in Fairfax. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in July for Fairfax, Virginia. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 38°C in 2016, Fairfax reached the highest temperature in July over the past 10 years. The lowest daytime temperature in this month was 22°C in 2016. The extreme nighttime temperatures ranged from a lowest recorded value of 9°C to a highest value of 26°C.
Rainfall amount
In July, there is an average of 142 mm of precipitation, spread over 16 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in July for Fairfax
Click on any day in July to get detailed info about the usual weather on that day in Fairfax. Check out the historical temperatures and precipitation over the past 10 years on this day.
July weather comparison
| Fairfax | New York | |
|---|---|---|
| Average temperature | 31°C | 31°C |
| Max. temperature | 34°C | 33°C |
| Min. temperature | 19°C | -5°C |
| Total precipitation | 142 mm | 160 mm |
| Rainy days | 16 days | 18 days |
Start of July
The month of July starts in Fairfax with hot temps, averaging around 31°C during the day and nights around 21°C.
Mid July
By mid-July, daytime temps rise to around 33°C, with nights around 22°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of July
By the end of July, the average daytime temperature in Fairfax is around 32°C, while nighttime temps are about 21°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Fairfax for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in July in Fairfax, Virginia. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in July in Fairfax
Temperature in July in Fairfax over the years
Precipitation charts
These charts show the average amount of precipitation in July in Fairfax, Virginia. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in July in Fairfax
Total precipitation in July in Fairfax over the years
Daily UV index in July in Fairfax
This chart shows the average daily UV index in July in Fairfax, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in July in Fairfax
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Average weather in Fairfax by month
Click on a month below to see detailed weather info for Fairfax. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.