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What is Sully Station Post Office, VA, Weather Like in October?

During the month of October, Sully Station Post Office, VA, has an average daytime high temperature of 68°F and an average overnight low temperature dropping to 46°F. Around 3.65 inches of precipitation is received during the month, with about 36.81 inches falling in a typical year. As you might expect, snow is not common in the month of October. Annually, Sully Station Post Office receives around 17.90 inches of snow.

October 2025: Actual vs. Average Temperatures

Showing temperatures through today (October 19, 2025)
Actual High Average High Actual Low Average Low

Actual data from: KIAD

Sully Station Post Office, VA Daily Weather Averages for October

Recorded at Washington Dc Dulles Ap (usw00093738), 5 miles N of Sully Station Post Office, VA
Day Avg Temps (°F) Precip (in) Snow (in) Degree Days (°F)
Low High Mean Month Year Month Year Heat Cool
10/1 52 F 73 F 63 F 0.13" 33.29" 0.00" 17.90" 4.5 F 2 F
10/2 51 F 73 F 62 F 0.26" 33.42" 0.00" 17.90" 4.8 F 1.8 F
10/3 51 F 73 F 62 F 0.38" 33.54" 0.00" 17.90" 5.1 F 1.7 F
10/4 50 F 72 F 61 F 0.51" 33.67" 0.00" 17.90" 5.4 F 1.6 F
10/5 50 F 72 F 61 F 0.63" 33.79" 0.00" 17.90" 5.7 F 1.5 F
10/6 49 F 72 F 60 F 0.76" 33.92" 0.00" 17.90" 6 F 1.4 F
10/7 49 F 71 F 60 F 0.88" 34.04" 0.00" 17.90" 6.3 F 1.3 F
10/8 48 F 71 F 60 F 1.01" 34.17" 0.00" 17.90" 6.6 F 1.2 F
10/9 48 F 70 F 59 F 1.13" 34.29" 0.00" 17.90" 7 F 1.1 F
10/10 48 F 70 F 59 F 1.24" 34.40" 0.00" 17.90" 7.3 F 1 F
10/11 47 F 70 F 58 F 1.36" 34.52" 0.00" 17.90" 7.6 F 0.9 F
10/12 47 F 69 F 58 F 1.47" 34.63" 0.00" 17.90" 7.8 F 0.8 F
10/13 46 F 69 F 58 F 1.58" 34.74" 0.00" 17.90" 8.1 F 0.7 F
10/14 46 F 69 F 57 F 1.69" 34.85" 0.00" 17.90" 8.4 F 0.6 F
10/15 46 F 68 F 57 F 1.81" 34.97" 0.00" 17.90" 8.7 F 0.5 F
10/16 45 F 68 F 56 F 1.93" 35.09" 0.00" 17.90" 9 F 0.4 F
10/17 45 F 67 F 56 F 2.04" 35.20" 0.00" 17.90" 9.3 F 0.4 F
10/18 44 F 67 F 56 F 2.16" 35.32" 0.00" 17.90" 9.7 F 0.3 F
10/19 44 F 67 F 55 F 2.28" 35.44" 0.00" 17.90" 10 F 0.3 F
10/20 44 F 66 F 55 F 2.40" 35.56" 0.00" 17.90" 10.3 F 0.3 F
10/21 43 F 66 F 55 F 2.52" 35.68" 0.00" 17.90" 10.7 F 0.3 F
10/22 43 F 66 F 54 F 2.64" 35.80" 0.00" 17.90" 11 F 0.2 F
10/23 43 F 65 F 54 F 2.76" 35.92" 0.00" 17.90" 11.4 F 0.2 F
10/24 42 F 65 F 54 F 2.87" 36.03" 0.00" 17.90" 11.7 F 0.2 F
10/25 42 F 65 F 53 F 2.99" 36.15" 0.00" 17.90" 12 F 0.2 F
10/26 41 F 64 F 53 F 3.10" 36.26" 0.00" 17.90" 12.4 F 0.2 F
10/27 41 F 64 F 53 F 3.20" 36.36" 0.00" 17.90" 12.7 F 0.2 F
10/28 41 F 64 F 52 F 3.31" 36.47" 0.00" 17.90" 13 F 0.1 F
10/29 41 F 63 F 52 F 3.43" 36.59" 0.00" 17.90" 13.4 F 0.1 F
10/30 40 F 63 F 51 F 3.54" 36.70" 0.00" 17.90" 13.7 F 0.1 F
10/31 40 F 62 F 51 F 3.65" 36.81" 0.00" 17.90" 14 F 0.1 F

Weather data provided by Xweather