Washington Weather: May
 |
Average Day Temperature: | 75.9°F |
|
Average Night Temperature: | 60.5°F |
|
Sea Water Temperature: | 66.3°F |
|
Number of Sunny Days: | 13 days |
| Sunshine Hours: | 13.8 - 14.7 hours | |
|
Number of Rainy Days: | 5 days |
| Precipitation Totals: | 2.7 in | |
| detailed information | ||
14 day weather
forecast
forecast
| Washington |
Sea Water
Temperature
Temperature
| Washington |
Air Temperature in May, °F
The highest day temperature in May 2026 was 105°F. The lowest night temperature was 43°F. The average values for day and night temperatures during May were 76.8°F и 58.7°F respectivly.
Washington Water Sea Temperature in May, °F
The average sea surface temperature in May 2026 for Washington was 69.2°F. The maximum and minimum values were 64.2°F and 78.2°F respectively.
Sunny, Cloudy and Gloomy days
Most of the days in May are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in May, in
Precipitation total in May for Washington is 2.7 in. It makes may one of the most rainy months of the year.
Wind Speed in May, mph
The average wind speed in May is 7.3 mph.
Average Sunny Hours Per Day
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Washington in May is 8.2 hours.
Washington on the Weather Map
USA Resorts:
NAME
F°
| Boston |  |
+90 |
| Chicago | |
+76 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston |  |
+86 |
| Las Vegas | |
+92 |
| Los Angeles |  |
+70 |
| Maui | |
+70 |
| Miami | |
+82 |
| Miami Beach | |
+84 |
| New York | |
+94 |
| San Diego | |
+64 |
| San Francisco | |
+60 |
| Sarasota | |
+94 |
| Tampa | |
+92 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Washington
Local time: 12:59
04 jun, thursday
| 1500 |  |
90°F | SE 6 mph |
| 1800 | |
86°F | SE 6 mph |
| 2100 |  |
74°F | NW 2 mph |
05 jun, friday
| 0000 | |
66°F | N 4 mph |
| 0300 |  |
64°F | NE 4 mph |
| 0600 | |
64°F | E 3 mph |
| 0900 | |
78°F | E 4 mph |
| 1200 | |
90°F | E 4 mph |