United States weather in May

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Check the the United States weather in May before you book your next holiday. This gives the best indication of the weather in May and includes figures for temperature, sunshine and rainfall. The United States may weather guide shown below is for Washington.

  • 24°C maximum daytime temperature in May in United States (Washington)24
    24°C max day temperature
  • 8 hours of sunshine per day (59% of daylight hours) in May in United States8
    8 hours of sunshine per day
  • 11 days with some rainfall in May in United States (Washington)11
    11 days with some rainfall
  • 12°C minimum night-time temperature in May in United States (Washington)12
    12°C min night temperature
  • 14 hours of daylight per day in May in United States (Washington)14
    14 hours of daylight per day
  • No heat & humidity in May in United States (Washington)0
    No heat & humidity
  • 96 mm monthly rainfall in May in United States (Washington)96
    96 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in United States (Washington)8
    8 (Very High) UV index

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Metric (°C / mm)  |  Imperial (°F / inches)

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