United States weather in May

Check the Weather in the United States 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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

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

More about U.S.A.

  • Browse the latest special offers on car hire for the USA
  • Options on Alamo Gold, full size vehicles and one-way car hire
  • Whether you're heading for Boston, Las Vegas, Florida or California

Top U.S.A. destinations

More destinations

Top ^