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Fairfax County (Herndon)
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United States weather

Weather in Fairfax County, Virginia for June 2026

Your guide to Fairfax County weather in June - trends and predictions

    Temperatures

  • Until now, June 2026 in Fairfax County has been nearly identical to the historical average, with a temperature of 30.7 °F (showing only a slight deviation of 0 °F).

  • The forecast for the next days in Fairfax County predicts temperatures to be around 31 °F, close to the historical average.

  • In general, the average temperature in Fairfax County at the beginning of June is 29.9 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 32.4 °F by the end of June.

    • Rain 🌧️

  • The climate of Fairfax County in June is notably wet, with an average of 13 rainy days, and a total of 175.2 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
17
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
32°/20°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Fairfax County Weather June

Move between months or click on a day
May
July
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
25°
2
Sunny
24°
3
Sunny
28°
4
Sunny
32°
5
Sunny
34°
6
Moderate or heavy rain shower
33°
7
Partly cloudy
33°
8
Overcast
27°
9
Overcast
29°
10
Moderate or heavy rain shower
33°
11
Moderate rain at times
33°
12
Heavy rain at times
35°
13
Sunny
31°
14
Patchy rain possible
33°
15
Cloudy
26°
16
Patchy rain possible
29°
17
Sunny
32°
18
Patchy rain possible
34°
19
Sunny
29°
20
Sunny
27°
21
Sunny
29°
22
Patchy rain possible
26°
23
Sunny
28°
24
Sunny
30°
25
Patchy rain possible
27°
26
Sunny
32°
27
Sunny
34°
28
Patchy rain possible
35°
29
Patchy rain possible
36°
30
Heavy rain at times
33°

Temperatures trend during June in Fairfax County

See the weather trend as well as the moving average line

June weather in Fairfax County day by day

Click on a date for more information
May July
Date Weather Temperatures Rain UV More
Jun. 1 Sunny
Sunny
 25° /12° 0 mm 11
Jun. 2 Sunny
Sunny
 24° /11° 0 mm 11
Jun. 3 Sunny
Sunny
 28° /12° 0 mm 11
Jun. 4 Sunny
Sunny
 32° /13° 0 mm 11
Jun. 5 Sunny
Sunny
 34° /16° 0 mm 11
Jun. 6 Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /18° 3.3 mm 12
Jun. 7 Partly cloudy
Partly cloudy
 33° /19° 3.2 mm 12
Jun. 8 Overcast
Overcast
 27° /18° 0 mm 12
Jun. 9 Overcast
Overcast
 29° /15° 0 mm 12
Jun. 10 Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /21° 9 mm 12
Jun. 11 Moderate rain at times
Moderate rain at times
 33° /22° 3.3 mm 12
Jun. 12 Heavy rain at times
Heavy rain at times
 35° /21° 5.8 mm 12
Jun. 13 Sunny
Sunny
 31° /19° 0 mm 12
Jun. 14 Patchy rain possible
Patchy rain possible
 33° /18° 3.4 mm 12
Jun. 15 Cloudy
Cloudy
 26° /18° 0.2 mm 12
Jun. 16 Patchy rain possible
Patchy rain possible
 29° /13° 0.2 mm 8.9
Jun. 17 Sunny
Sunny
 32° /17° 0 mm 8.9
Jun. 18 Patchy rain possible
Patchy rain possible
 34° /21° 0.9 mm 8
Jun. 19 Sunny
Sunny
 29° /16° 0 mm 9.4
Jun. 20 Sunny
Sunny
 27° /15° 0 mm 9.5
Jun. 21 Sunny
Sunny
 29° /13° 0 mm 1.2
Jun. 22 Patchy rain possible
Patchy rain possible
 26° /18° 0.5 mm 5
Jun. 23 Sunny
Sunny
 28° /13° 0 mm 6
Jun. 24 Sunny
Sunny
 30° /15° 0 mm 6
Jun. 25 Patchy rain possible
Patchy rain possible
 27° /20° 3.9 mm 5
Jun. 26 Sunny
Sunny
 32° /18° 0 mm 6
Jun. 27 Sunny
Sunny
 34° /20° 0 mm 7
Jun. 28 Patchy rain possible
Patchy rain possible
 35° /21° 0.2 mm 6
Jun. 29 Patchy rain possible
Patchy rain possible
 36° /20° 1.8 mm 6
Jun. 30 Heavy rain at times
Heavy rain at times
 33° /22° 9.8 mm 7
Next
Important Notice
Our weather forecast for Fairfax County in June 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.
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Fairfax County in June - FAQ

What are the expected maximum and minimum temperatures in Fairfax County during June?

Expect warm days with temperatures around 32°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.

How much rainfall should be expected in Fairfax County during June?

Significant rainfall exceeding 175.2 mm is expected in Fairfax County during June, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Fairfax County during June?

The average wind speed in Fairfax County during June is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

June rainfall patterns in Fairfax County

Explore the daily rainfall trends and prepare for Fairfax Countys June weather 💧
Typically, Fairfax County has 13 rainy days in June with a total of 175.2 mm of rainfall.

UV exposure in Fairfax County during June

Stay informed about UV levels for safe outdoor activities throughout the month of June ☀️
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Location coordinates Where is Fairfax County?

Get accurate weather forecasts for Fairfax County, located at latitude 38.97 and longitude -77.386. Stay updated with localized weather information tailored for Fairfax County.

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