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Fairfax County Weather May

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Temperatures trend during May in Fairfax County

See the weather trend as well as the moving average line

May weather in Fairfax County day by day

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April June

Date	Weather	Temperatures	Rain	UV
May 1	Overcast	17° /5°	0.8 mm	8
May 2	Overcast	13° /6°	0.2 mm	8
May 3	Partly cloudy	16° /3°	0 mm	9
May 4	Partly cloudy	25° /8°	0 mm	9
May 5	Partly cloudy	27° /14°	0 mm	10
May 6	Moderate rain	21° /13°	10.4 mm	4
May 7	Patchy rain possible	16° /10°	1.3 mm	2
May 8	Partly cloudy	20° /6°	0 mm	10
May 9	Overcast	21° /11°	0 mm	10
May 10	Patchy rain possible	26° /10°	0.7 mm	10
May 11	Light rain	14° /9°	2.6 mm	3
May 12	Sunny	20° /5°	0 mm	10
May 13	Heavy rain at times	22° /12°	11.6 mm	9
May 14	Light rain	14° /9°	4.1 mm	6
May 15	Overcast	20° /10°	0 mm	8
May 16	Patchy rain possible	28° /10°	1.8 mm	10
May 17	Patchy rain possible	29° /17°	1.4 mm	9
May 18	Partly cloudy	33° /17°	0 mm	10.8
May 19	Sunny	34° /20°	0 mm	10
May 20	Moderate rain at times	33° /19°	7.8 mm	10
May 21	Moderate rain at times	21° /13°	8.6 mm	3
May 22	Moderate rain	14° /11°	22.2 mm	2
May 23	Moderate rain	11° /10°	11.2 mm	2
May 24	Light rain	20° /12°	3.6 mm	2
May 25	Light rain	21° /15°	3.5 mm	2
May 26	Moderate or heavy rain shower	25° /17°	7.1 mm	4
May 27	Moderate or heavy rain shower	24° /18°	7.9 mm	4
May 28	Cloudy	24° /16°	0 mm	11
May 29	Overcast	24° /11°	0 mm	11
May 30	Partly cloudy	23° /15°	0 mm	11
May 31	Sunny	27° /9°	0 mm	11
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Important Notice

Our weather forecast for Fairfax County in May 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 May - FAQ

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

Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

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

Significant rainfall exceeding 106.8 mm is expected in Fairfax County during May, 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 May?

The average wind speed in Fairfax County during May is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Fairfax County

Explore the daily rainfall trends and prepare for Fairfax Countys May weather 💧

Typically, Fairfax County has 15 rainy days in May with a total of 106.8 mm of rainfall.

UV exposure in Fairfax County during May

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

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Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
						1 17°
2 13°	3 16°	4 25°	5 27°	6 21°	7 16°	8 20°
9 21°	10 26°	11 14°	12 20°	13 22°	14 14°	15 20°
16 28°	17 29°	18 33°	19 34°	20 33°	21 21°	22 14°
23 11°	24 20°	25 21°	26 25°	27 24°	28 24°	29 24°
30 23°	31 27°