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Weather in May in Washington, District Of Columbia

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< May >
 
Normal Max/ High Temperature 25°C (76°F)
 
Average Temperature 19°C (66°F)
 
Min/ Low Temperature 14°C (57°F)
Average Sea or Water Temp 20°C(68°F)
 
Normal Precipitation 93mm (3.7in)
Number of Wet Days (probability of rain on a day) 12 (39%)
Average Sunlight per day 08:09
Average Daylight per day 14:16
Sunny (Cloudy) Daylight Hours 58% (42%)
Sun altitude at solar noon on the 21st day.
71.4°


  • The average sea tempeature is 20 °C (68 °F).
  • The average temperature in Washington, District Of Columbia in May is somewhat warm at 19.1 °C (66.38 °F).
  • Afternoons can be fairly hot with average high temperatures reaching 24.6 °C (76.3 °F).
  • Overnight temperatures are generally mild with an average low of 13.7 °C (56.7 °F).
  • The range/ variation of daily mean temperatures in May is 10.9 °C (19.6 °F).
  • The weather in May is hardly arid with rain occasionally. Circa 93mm (3.7in) of liquid is deposited across an average of 12 days.
  • The skies in Washington, District Of Columbia are moderately sunny having on balance a pleasing 8:09 of dazzling sunlight daily.
  • The shortest day is 13:47 long and the longest day is 14:40 long with an average length of 14:16.
  • There are approximately 5:57 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 57.8% of daylight hours and cloudy 42.2% of daylight hours.

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Weather Trend Graph for May in Washington, District Of Columbia, Usa

Graph of weather in Washington, District Of Columbia in May

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