Weather in Delaware in May

General weather information about Delaware

Average annual temperature is 11.6 °C

Absolute maximum temperature: 34.6 °C

Absolute minimum temperature: -18.4 °C

Number of sunny days: 166 days

Number of rainy days: 190 days

Number of snow days: 9 days

Look at detailed online map of Delaware

* Weather data for Delaware United States is based on climate observations for 2026 year

Delaware air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)17.417.316.131.129.834.633.130.032.427.819.214.8
Average daytime temperature (°C)7.07.49.418.221.825.129.226.523.018.69.97.8
Average temperature (°C)3.11.73.611.514.819.223.321.218.113.24.83.6
Average night temperature (°C)-0.2-2.8-0.96.18.214.018.316.614.19.00.60.4
Absolute minimum temperature (°C)-4.8-18.4-8.1-2.22.79.313.612.57.72.7-5.3-6.4

Delaware monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.610.611.913.314.515.114.813.812.511.19.99.3
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.66.37.48.711.910.711.910.08.27.87.44.4
Precipitation (mm)12543921094691103971616781194
Sunny days12151016221271111171716
Rainy days18101914918242019141213
Snow days132000000012

Delaware - weather forecast by months

Delaware weather in januaryDelaware weather in februaryDelaware weather in marchDelaware weather in aprilDelaware weather in mayDelaware weather in juneDelaware weather in julyDelaware weather in augustDelaware weather in septemberDelaware weather in octoberDelaware weather in novemberDelaware weather in december

Best time to visit Delaware:

The best time to visit Delaware during the most sunny months:

  • May — 11.9(h)
  • June — 10.7(h)
  • July — 11.9(h)

The largest precipitation sum in Delaware is at

  • September — 161(mm)
  • December — 194(mm)

    • Weather forecast in the closest to Delaware admin centers

    Weather forecast in the closest towns to Delaware

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    Frequently asked questions

    When is the best time to visit Delaware?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Delaware.
    What is the weather like in Delaware?
    See average temperature, rainfall and daylight hours for Delaware by month in the table above.
    How many sunny days does Delaware have?
    The monthly weather statistics above show sunshine and rainfall patterns for Delaware throughout the year.