May

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Herndon Weather May

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April

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Temperatures trend during May in Herndon

See the weather trend as well as the moving average line

May weather in Herndon day by day

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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 or heavy rain shower	21° /13°	10.4 mm	4
May 7	Overcast	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	Moderate or heavy rain shower	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	Overcast	14° /9°	4.1 mm	6
May 15	Overcast	20° /10°	0 mm	8
May 16	Partly cloudy	28° /10°	1.8 mm	10
May 17	Heavy rain at times	29° /17°	1.4 mm	9
May 18	Partly cloudy	33° /17°	0 mm	11
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 or heavy rain shower	14° /11°	22.2 mm	2
May 23	Moderate or heavy rain shower	11° /10°	11.2 mm	2
May 24	Patchy rain possible	20° /12°	3.6 mm	2
May 25	Moderate rain at times	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 Herndon 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 Herndon forecast closer to your planned date for the most up-to-date weather information.

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Herndon in May - FAQ

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

Significant rainfall exceeding 106.8 mm is expected in Herndon during May, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Herndon during May?

The average wind speed in Herndon during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Herndon

Explore the daily rainfall trends and prepare for Herndons May weather 💧

Typically, Herndon has 17 rainy days in May with a total of 106.8 mm of rainfall.

UV exposure in Herndon during May

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

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

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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°