Month
October
November
December
January
February
March
Normal
(Dulles)
0.0
0.8
2.2
8.1
6.2
3.4
Actual
(Ashburn)
11/14
0.0
T
0.0
0.0
0.0
0.0
Departure
From Normal
12/13
0.0
T
0.0
0.0
0.0
0.0
             
             
Stormys Weather
Insight into DC Winter Weather Forecasts
Snowfall Data
Snowfall by season
Actual
(Ashburn)
10/11
Event Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temp 31.7 34.8 43.4 53.1 62.3 70.9 75.7 74.4 67.3 55.0 45.2 36.0 54.3
Precip 3.05 2.77 3.55 3.22 4.18 4.07 3.57 3.78 3.82 3.37 3.31 3.07 41.76
tClimatology
Dulles
Forecast Verfication #1:  Oct 28/29 Most probable value - Dulles:  0.5 inch/Actual 1.1"