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Report for 2021
 Annual Climatological Summary for 2021
Name: Little Rocky Run City: Clifton State: Virginia
Elevation: 330 ft Lat: N 38° 49' 06" Lon: W 077° 25' 12"
Temperature (°F), Heat Base: 65.0 Cool Base: 65.0
Dep. Heat Cool Max Max Min Min
Mean Mean From Deg Deg >= <= <= <=
YR MO Max Min Mean Norm Days Days Hi Date Low Date 90.0 50.0 32.0 10.0
------------------------------------------------------------------------------------
21 1 43.8 28.1 35.6 4.6 911 0 56.4 2 17.0 30 0 24 25 0
21 2 43.1 29.0 35.7 1.7 821 0 67.1 24 18.6 21 0 21 22 0
21 3 61.3 38.2 49.5 5.5 498 19 84.3 26 19.6 7 0 7 10 0
21 4 69.3 44.5 57.0 3.0 301 61 90.2 28 25.0 3 1 1 4 0
21 5 76.8 51.3 63.6 1.6 177 133 92.9 26 39.6 8 3 0 0 0
21 6 86.8 64.6 75.1 4.1 22 325 97.7 30 49.8 23 12 0 0 0
21 7 91.1 68.2 78.6 2.6 2 423 97.2 7 59.1 4 20 0 0 0
21 8 90.3 68.9 77.8 3.8 4 403 100.6 12 58.4 5 17 0 0 0
21 9 82.2 59.8 70.2 3.2 53 209 91.5 15 47.6 30 3 0 0 0
21 10 74.2 54.8 63.1 8.1 142 83 87.2 4 39.5 19 0 0 0 0
21 11 56.6 33.7 44.6 -0.4 618 7 77.4 9 22.4 24 0 9 14 0
21 12 56.0 36.3 45.6 10.6 600 2 70.4 25 24.4 21 0 8 14 0
------------------------------------------------------------------------------------
69.3 48.1 58.0 4.0 4155 1668 100.6 Aug 17.0 Jan 56 70 89 0
Precipitation (in)
Dep. Max Days of Rain
From Obs. >=
YR MO Total Norm Day Date 0.25 1.00 3.00
---------------------------------------------
21 1 1.56 -1.14 0.81 1 2 0 0
21 2 3.96 1.16 0.70 15 4 0 0
21 3 2.34 -0.96 0.63 24 4 0 0
21 4 2.67 -0.43 0.56 9 5 0 0
21 5 3.85 -0.15 1.15 26 6 1 0
21 6 3.12 -0.78 1.10 14 3 1 0
21 7 2.81 -0.69 1.20 1 4 1 0
21 8 3.36 -0.54 0.94 20 5 0 0
21 9 5.83 2.43 2.41 1 4 2 0
21 10 3.63 0.33 1.89 25 3 2 0
21 11 0.64 -2.66 0.37 12 1 0 0
21 12 0.54 -2.76 0.15 30 0 0 0
---------------------------------------------
34.31 -6.19 2.41 Sep 41 7 0
Wind Speed (mph)
Dom
YR MO Avg. Hi Date Dir
------------------------------
21 1 1.3 24.0 28 NNW
21 2 1.5 21.0 2 NNW
21 3 1.7 25.0 26 NNW
21 4 1.5 29.0 30 N
21 5 1.1 27.0 5 NNE
21 6 1.0 21.0 14 ESE
21 7 0.9 20.0 1 ENE
21 8 0.7 17.0 18 E
21 9 0.9 21.0 23 ENE
21 10 0.8 23.0 27 NE
21 11 1.0 22.0 26 N
21 12 1.2 25.0 22 SSE
------------------------------
1.1 29.0 Apr NNE