Washington weather in May 2026

Expect daytime maximum temperatures of 75°F in Washington, D.C. in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 3.8 inches of rainfall in the month.

  • 75°F maximum daytime temperature in May in Washington75
    75°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Washington11
    11 days with some rainfall
  • 54°F minimum night-time temperature in May in Washington54
    54°F min night temperature
  • 14 hours of daylight per day in May in Washington14
    14 hours of daylight per day
  • No heat & humidity in May in Washington0
    No heat & humidity
  • 3.8 inches monthly rainfall in May in Washington3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Washington8
    8 (Very High) UV index

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The May weather guide for D.C., represented by Washington, (Washington) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Washington in May?

Daytime temperatures usually reach 75°F in Washington in May, falling to 54°F at night.

How sunny is it in Washington in May?

There are normally 8 hours of bright sunshine each day in Washington in May - that's 59% of daylight hours.

Does it rain in Washington in May?

There are usually 11 days with some rain in Washington in May and the average monthly rainfall is 3.8 inches.

Washington May sunrise & sunset times

Browse the sunrise and sunset times for Washington in May 2026. Select a month to view Washington sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:10 19:01
Saturday, 16th May 2026 04:55 19:15
Sunday, 31st May 2026 04:45 19:27

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