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Washington, D.C. United States

Weather in Washington County for May 2025

Your guide to Washington County weather in May - trends and predictions
  • In general, the average temperature in Washington County at the beginning of May is 20 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.4 °F by the end of May.

  • Washington County sees moderate rainfall in May, averaging 9 rainy days.

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Average dry days
22
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/10°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Washington County in May average weather

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Temperatures trend during May in Washington County

See the weather trend as well as the moving average line

May weather day by day

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Date Weather Temperatures Rain UV More
May 1 Patchy rain possible
Patchy rain possible
20° /12° 1.3 mm 5
May 2 Patchy rain possible
Patchy rain possible
21° /11° 0.6 mm 5
May 3 Moderate rain at times
Moderate rain at times
18° /9° 1.5 mm 5
May 4 Patchy rain possible
Patchy rain possible
14° /9° 4.7 mm 3
May 5 Patchy rain possible
Patchy rain possible
19° /8° 7.7 mm 5
May 6 Overcast
Overcast
23° /11° 5.3 mm 6
May 7 Heavy rain at times
Heavy rain at times
25° /14° 5.7 mm 6
May 8 Patchy rain possible
Patchy rain possible
29° /16° 1.3 mm 7
May 9 Heavy rain at times
Heavy rain at times
22° /14° 4 mm 5
May 10 Sunny
Sunny
19° /9° 12.2 mm 5
May 11 Partly cloudy
Partly cloudy
22° /9° 0.9 mm 6
May 12 Overcast
Overcast
23° /11° 0.9 mm 5
May 13 Moderate or heavy rain shower
Moderate or heavy rain shower
23° /12° 8.9 mm 5
May 14 Partly cloudy
Partly cloudy
22° /14° 2.4 mm 5
May 15 Partly cloudy
Partly cloudy
21° /12° 10.4 mm 6
May 16 Patchy rain possible
Patchy rain possible
22° /13° 3.5 mm 5
May 17 Partly cloudy
Partly cloudy
22° /12° 0.8 mm 6
May 18 Sunny
Sunny
19° /10° 7.5 mm 5
May 19 Patchy rain possible
Patchy rain possible
22° /12° 0.2 mm 5
May 20 Overcast
Overcast
24° /11° 1 mm 6
May 21 Partly cloudy
Partly cloudy
27° /12° 0.8 mm 7
May 22 Partly cloudy
Partly cloudy
30° /14° 2.1 mm 7
May 23 Partly cloudy
Partly cloudy
24° /14° 2.6 mm 6
May 24 Overcast
Overcast
27° /12° 0 mm 6
May 25 Sunny
Sunny
26° /14° 0.3 mm 6
May 26 Sunny
Sunny
27° /13° 3.6 mm 7
May 27 Sunny
Sunny
26° /14° 4.7 mm 6
May 28 Moderate or heavy rain shower
Moderate or heavy rain shower
23° /14° 3.8 mm 5
May 29 Moderate or heavy rain shower
Moderate or heavy rain shower
22° /14° 5.9 mm 5
May 30 Overcast
Overcast
22° /12° 0.3 mm 5
May 31 Sunny
Sunny
25° /10° 0 mm 7
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Important Notice
Our weather forecast for Washington 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 Washington County forecast closer to your planned date for the most up-to-date weather information.

Washington County in May - FAQ

What are the expected maximum and minimum temperatures in Washington County during May?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Washington County during May?
Significant rainfall exceeding 190.9 mm is expected in Washington County during May, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Washington County during May?
The average wind speed in Washington County during May is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Washington County

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

UV exposure in Washington County during May

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

Get accurate weather forecasts for Washington County, located at latitude 38.895 and longitude -77.036. Stay updated with localized weather information tailored for Washington County.

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