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Weather in Loudoun County, Virginia for May 2026

Your guide to Loudoun County weather in May - trends and predictions

    Official Weather Alert ⚠️

  • - See hour by hour.

    • Temperatures

  • Expect cooler weather in the next days in Loudoun County with the forecast suggesting a temperature of 19.8 °F, lower than the historical average.

  • In general, the average temperature in Loudoun County at the beginning of May is 20.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 22 °F by the end of May.

    • Rain 🌧️

  • Loudoun County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 309.8 mm.

    • More

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

Average dry days
9
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/13°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Loudoun County Weather May

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

Temperatures trend during May in Loudoun County

See the weather trend as well as the moving average line

May weather in Loudoun County day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
May 1 Overcast
Overcast
 21° /10° 0 mm 6
May 2 Partly cloudy
Partly cloudy
 23° /12° 0 mm 8
May 3 Partly cloudy
Partly cloudy
 23° /11° 0 mm 7
May 4 Heavy rain at times
Heavy rain at times
 19° /12° 6.4 mm 6
May 5 Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /13° 8.9 mm 6
May 6 Moderate rain
Moderate rain
 24° /12° 9.9 mm 2.5
May 7 Patchy rain possible
Patchy rain possible
 11° /6° 2.8 mm 1.4
May 8 Sunny
Sunny
 20° /3° 0 mm 0.7
May 9 Patchy rain possible
Patchy rain possible
 20° /10° 1.9 mm 3
May 10 Patchy rain possible
Patchy rain possible
 25° /7° 0.1 mm 3
May 11 Overcast
Overcast
 18° /9° 0 mm 3
May 12 Patchy rain possible
Patchy rain possible
 22° /7° 0.2 mm 3
May 13 Partly cloudy
Partly cloudy
 26° /11° 0 mm 5
May 14 Patchy rain possible
Patchy rain possible
 26° /13° 0.6 mm 4
May 15 Patchy rain possible
Patchy rain possible
 32° /17° 1.2 mm 5
May 16 Patchy rain possible
Patchy rain possible
 12° /11° 2.3 mm 3
May 17 Patchy rain possible
Patchy rain possible
 12° /9° 3.1 mm 3
May 18 Patchy rain possible
Patchy rain possible
 11° /8° 0.3 mm 2
May 19 Partly cloudy
Partly cloudy
 18° /6° 0 mm 4
May 20 Overcast
Overcast
 20° /10° 0 mm 5
May 21 Sunny
Sunny
 20° /12° 41.9 mm 5
May 22 Heavy rain at times
Heavy rain at times
 24° /12° 7.8 mm 6
May 23 Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /12° 2.1 mm 5
May 24 Overcast
Overcast
 23° /11° 0 mm 6
May 25 Cloudy
Cloudy
 24° /12° 1.1 mm 6
May 26 Heavy rain at times
Heavy rain at times
 24° /14° 6.7 mm 5
May 27 Heavy rain at times
Heavy rain at times
 23° /14° 6.3 mm 5
May 28 Partly cloudy
Partly cloudy
 19° /12° 26.2 mm 5
May 29 Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /12° 3.5 mm 5
May 30 Overcast
Overcast
 20° /13° 58.2 mm 5
May 31 Sunny
Sunny
 21° /10° 24.8 mm 6
Next
Important Notice
Our weather forecast for Loudoun 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 Loudoun County forecast closer to your planned date for the most up-to-date weather information.
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Loudoun County in May - FAQ

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

Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.

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

Significant rainfall exceeding 309.8 mm is expected in Loudoun County during May, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Loudoun County during May?

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

May rainfall patterns in Loudoun County

Explore the daily rainfall trends and prepare for Loudoun Countys May weather 💧
Typically, Loudoun County has 22 rainy days in May with a total of 309.8 mm of rainfall.

UV exposure in Loudoun 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 Loudoun County?

Get accurate weather forecasts for Loudoun County, located at latitude 39.116 and longitude -77.564. Stay updated with localized weather information tailored for Loudoun County.

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