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Weather in Delaware for May 2026

Your guide to Delaware weather in May - trends and predictions

    Temperatures

  • Until now, May 2026 in Delaware is cooler than usual, with temperatures averaging 18.4 °F, this is -2.2 °F below the typical seasonal average.

  • The forecast for the coming days of May 2026 predicts a temperature of 25.8 °F , which is warmer than usual.

  • In general, the average temperature in Delaware at the beginning of May is 20.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24 °F by the end of May.

  • Rain 🌧️

  • Delaware experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 312.6 mm.

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Average dry days
4
Dry days
Average rainy days
27
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/13°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Delaware Weather May

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What’s the Weather Like in Delaware This May?

Discover the average temperatures and weather trends across Delaware’s cities this May.

Temperatures trend during May in Delaware

See the weather trend as well as the moving average line

May weather in Delaware day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
May 1 Light rain shower
Light rain shower
19° /9° 1.8 mm 6
May 2 Overcast
Overcast
22° /11° 0.1 mm 6
May 3 Sunny
Sunny
22° /11° 1 mm 7
May 4 Light drizzle
Light drizzle
19° /11° 5.9 mm 6
May 5 Light rain
Light rain
21° /12° 5 mm 6
May 6 Fog
Fog
22° /15° 4.6 mm 5
May 7 Overcast
Overcast
21° /13° 2.6 mm 5
May 8 Light rain shower
Light rain shower
24° /12° 4.3 mm 7
May 9 Light rain shower
Light rain shower
19° /11° 35.5 mm 5
May 10 Light rain shower
Light rain shower
20° /8° 6 mm 6
May 11 Patchy rain possible
Patchy rain possible
18° /9° 0.9 mm 4
May 12 Light rain shower
Light rain shower
20° /9° 1.2 mm 6
May 13 Mist
Mist
21° /11° 5.9 mm 5
May 14 Patchy rain possible
Patchy rain possible
17° /10° 2.3 mm 5.3
May 15 Partly cloudy
Partly cloudy
18° /7° 0 mm 0.3
May 16 Patchy rain possible
Patchy rain possible
24° /9° 0.4 mm 4
May 17 Patchy rain possible
Patchy rain possible
26° /15° 1.8 mm 5
May 18 Sunny
Sunny
31° /18° 0 mm 6
May 19 Sunny
Sunny
32° /16° 0 mm 6
May 20 Patchy rain possible
Patchy rain possible
28° /16° 1.5 mm 5
May 21 Overcast
Overcast
22° /12° 0 mm 4
May 22 Sunny
Sunny
24° /14° 0 mm 5
May 23 Sunny
Sunny
25° /12° 0 mm 5
May 24 Patchy rain possible
Patchy rain possible
32° /16° 3.2 mm 5
May 25 Patchy rain possible
Patchy rain possible
31° /19° 0.3 mm 5
May 26 Patchy rain possible
Patchy rain possible
31° /20° 2 mm 5
May 27 Moderate rain
Moderate rain
20° /12° 12.6 mm 4
May 28 Patchy rain possible
Patchy rain possible
19° /13° 47.5 mm 5
May 29 Patchy light rain with thunder
Patchy light rain with thunder
23° /13° 1.8 mm 5
May 30 Light drizzle
Light drizzle
22° /14° 7.3 mm 5
May 31 Partly cloudy
Partly cloudy
22° /11° 21.9 mm 6
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Important Notice
Our weather forecast for Delaware 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 Delaware forecast closer to your planned date for the most up-to-date weather information.

Delaware in May - FAQ

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

Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Delaware during May?

Significant rainfall exceeding 312.6 mm is expected in Delaware during May, occurring over more than 27 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Delaware during May?

The average wind speed in Delaware during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Delaware

Explore the daily rainfall trends and prepare for Delawares May weather 💧
Typically, Delaware has 27 rainy days in May with a total of 312.6 mm of rainfall.

UV exposure in Delaware during May

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

Get accurate weather forecasts for Delaware, located at latitude 39.684 and longitude -75.75. Stay updated with localized weather information tailored for Delaware.

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