World

North America

Dulles Intl. Airport





Start End

Frost Days per Year (January 2000 - December 2008)

Jan Feb Mar Apr May Jun
21.0 19.3 12.8 2.6 0.1 0.0 [days]
97 92 97 97 89 96 Data availability[%]

Jul Aug Sep Oct Nov Dec  
0.0 0.0 0.0 1.8 8.8 18.7 [days]
97 94 97 97 97 98 Data availability[%]
Averaged Value (January 2000 - December 2008)  : 85.1 days

Every day in a year with the lowest temperature below freezing level (0°C / 32 °F) is called frost day.


This very useful tool allows you to calculate the mean monthly temperatures, days with precipitation, total precipitation, days with snow and snow-depths, hours of sunshine and many more...