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Report for 2018
 Annual Climatological Summary for 2018
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
------------------------------------------------------------------------------------
18 1 44.9 23.8 34.0 3.0 964 1 70.9 12 3.2 7 0 20 23 4
18 2 53.4 35.0 44.0 10.0 602 13 81.5 21 10.2 3 0 13 12 0
18 3 51.2 31.2 41.0 -3.0 747 6 79.3 29 22.6 10 0 15 22 0
18 4 64.2 42.8 53.3 -0.7 387 36 86.5 13 29.8 8 0 2 2 0
18 5 81.0 60.4 70.7 8.7 43 218 91.4 4 41.5 1 3 0 0 0
18 6 82.7 64.2 73.4 2.4 20 273 95.2 19 54.1 12 3 0 0 0
18 7 86.7 67.2 77.0 1.0 5 379 96.8 3 56.7 9 9 0 0 0
18 8 87.3 69.0 77.6 3.6 4 395 94.5 29 57.2 24 12 0 0 0
18 9 79.0 66.3 71.9 4.9 24 201 94.3 4 55.1 30 4 0 0 0
18 10 68.4 50.3 58.8 3.8 282 89 87.1 4 30.7 22 0 1 2 0
18 11 50.7 35.5 43.0 -2.0 663 5 74.4 1 25.6 11 0 15 13 0
18 12 47.9 31.0 39.4 4.4 792 0 66.1 21 19.8 8 0 19 18 0
------------------------------------------------------------------------------------
66.5 48.1 57.0 3.0 4538 1621 96.8 Jul 3.2 Jan 31 85 92 4
Precipitation (in)
Dep. Max Days of Rain
From Obs. >=
YR MO Total Norm Day Date 0.25 1.00 3.00
---------------------------------------------
18 1 1.25 -1.45 0.69 12 2 0 0
18 2 4.15 1.35 0.96 4 5 0 0
18 3 2.36 -0.94 0.96 20 2 0 0
18 4 4.18 1.08 1.36 25 4 1 0
18 5 8.17 4.17 2.46 31 8 2 0
18 6 4.39 0.49 0.79 3 7 0 0
18 7 10.28 6.78 5.17 21 8 3 1
18 8 5.99 2.09 3.20 1 4 2 1
18 9 5.97 2.57 1.28 9 6 2 0
18 10 2.37 -0.93 0.90 11 3 0 0
18 11 6.77 3.47 1.28 24 9 3 0
18 12 4.87 1.57 2.22 15 5 1 0
---------------------------------------------
60.75 20.25 5.17 Jul 63 14 2
Wind Speed (mph)
Dom
YR MO Avg. Hi Date Dir
------------------------------
18 1 3.4 42.2 4 N
18 2 3.0 24.2 2 ENE
18 3 3.8 39.3 2 NNW
18 4 3.6 33.1 4 NNE
18 5 1.9 26.0 14 ENE
18 6 1.6 26.0 19 NNE
18 7 1.7 19.2 23 ENE
18 8 1.3 15.9 17 NE
18 9 1.1 15.1 8 N
18 10 1.0 27.0 21 NNE
18 11 1.3 24.0 28 N
18 12 0.9 19.0 7 NNW
------------------------------
2.0 42.2 Jan NNE