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Fairfax County (Herndon)
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United States weather

Weather in Fairfax County, Virginia for March 2027

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

    Snow Forecast ❄️

  • Snowfall in Fairfax County during March is quite rare, with fewer than 2 snowy days on average.

    • Temperatures

  • In general, the average temperature in Fairfax County at the beginning of March is 9.3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17 °F by the end of March.

    • Rain 🌧️

  • Fairfax County experiences moderate rainfall in March, with an average of 6 rainy days and a total precipitation of 177.6 mm.

    • More

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

Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
1
Snow days
Average temperatures
15°/5°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Fairfax County Weather March

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

Temperatures trend during March in Fairfax County

See the weather trend as well as the moving average line

March weather in Fairfax County day by day

Click on a date for more information
February April
Date Weather Temperatures Rain Snow More
Mar. 1 Fog
Fog
 8° /1° 0 mm 0 cm
Mar. 2 Overcast
Overcast
 1° /-3° 0 mm 0 cm
Mar. 3 Light freezing rain
Light freezing rain
 6° /0° 4 mm 0 cm
Mar. 4 Fog
Fog
 9° /6° 0 mm 0 cm
Mar. 5 Fog
Fog
 15° /8° 0 mm 0 cm
Mar. 6 Moderate rain
Moderate rain
 14° /7° 31 mm 0 cm
Mar. 7 Fog
Fog
 12° /5° 17.2 mm 0 cm
Mar. 8 Overcast
Overcast
 20° /13° 0 mm 0 cm
Mar. 9 Sunny
Sunny
 19° /6° 0 mm 0 cm
Mar. 10 Sunny
Sunny
 25° /9° 0 mm 0 cm
Mar. 11 Overcast
Overcast
 26° /18° 0 mm 0 cm
Mar. 12 Heavy rain at times
Heavy rain at times
 21° /3° 5.6 mm 0 cm
Mar. 13 Overcast
Overcast
 10° /0° 0 mm 0 cm
Mar. 14 Overcast
Overcast
 12° /6° 0 mm 0 cm
Mar. 15 Overcast
Overcast
 11° /4° 0 mm 0 cm
Mar. 16 Moderate or heavy rain shower
Moderate or heavy rain shower
 22° /4° 87.3 mm 0 cm
Mar. 17 Partly cloudy
Partly cloudy
 3° /-2° 28.9 mm 20.9 cm
Mar. 18 Overcast
Overcast
 3° /-2° 0 mm 0 cm
Mar. 19 Overcast
Overcast
 9° /0° 0 mm 0 cm
Mar. 20 Fog
Fog
 18° /2° 0 mm 0 cm
Mar. 21 Overcast
Overcast
 14° /6° 0 mm 0 cm
Mar. 22 Cloudy
Cloudy
 26° /8° 0 mm 0 cm
Mar. 23 Light rain
Light rain
 17° /7° 3.6 mm 0 cm
Mar. 24 Partly cloudy
Partly cloudy
 10° /-1° 0 mm 0 cm
Mar. 25 Overcast
Overcast
 14° /4° 0 mm 0 cm
Mar. 26 Overcast
Overcast
 19° /8° 0 mm 0 cm
Mar. 27 Thundery outbreaks possible
Thundery outbreaks possible
 18° /8° 0 mm 0 cm
Mar. 28 Sunny
Sunny
 9° /0° 0 mm 0 cm
Mar. 29 Partly cloudy
Partly cloudy
 16° /2° 0 mm 0 cm
Mar. 30 Overcast
Overcast
 17° /9° 0 mm 0 cm
Mar. 31 Overcast
Overcast
 26° /13° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Fairfax County in March 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 March - FAQ

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

During March, expect a variety of temperatures with highs around 15° and lows near 5°, suitable for diverse activities and preferences.

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

Significant rainfall exceeding 177.6 mm is expected in Fairfax County during March, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Fairfax County in March 2027?

Fairfax County typically sees 20.9 cm of snowfall during March.

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

The average wind speed in Fairfax County during March is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

Fairfax County snow forecast March 2027

Track daily snowfall levels and discover Fairfax County’s snowy potential this March ❄️
On average, Fairfax County sees 1 snowy days during March, with approximately 20.9 cm of total snowfall.

March rainfall patterns in Fairfax County

Explore the daily rainfall trends and prepare for Fairfax Countys March weather 💧
Typically, Fairfax County has 6 rainy days in March with a total of 177.6 mm of rainfall.

UV exposure in Fairfax County during March

Stay informed about UV levels for safe outdoor activities throughout the month of March ☀️
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Herndon
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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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