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Report for 2020
Annual Climatological Summary for 2020
Name: NapervilleWather.com City: Naperville State: IL
Elevation: 781 ft Lat: N 41° 47' 23" Lon: W 088° 07' 27"
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 80.0 25.2 32.0 0.0
------------------------------------------------------------------------------------
20 1 51.3 24.6 33.2 13.9 1470 71 158.0 12 0.7 19 5 1 37 0
20 2 36.8 20.8 28.5 4.2 1058 0 56.9 23 -5.5 14 0 1 28 1
20 3 57.6 32.9 41.0 5.8 751 6 158.0 9 20.2 7 2 0 16 0
20 4 59.0 37.4 47.1 0.1 545 9 80.5 7 24.9 16 1 0 7 0
20 5 69.3 49.3 58.5 0.1 514 132 91.1 24 27.8 9 11 0 4 0
20 6 85.1 61.0 72.4 4.3 77 507 95.1 2 48.6 1 44 0 0 0
20 7 88.3 66.5 76.6 4.0 4 445 95.0 6 59.8 13 38 0 0 0
20 8 87.6 63.3 74.4 3.8 34 464 95.8 24 49.8 5 41 0 0 0
20 9 81.7 54.5 65.0 2.3 254 254 158.0 11 40.6 19 26 0 0 0
20 10 67.0 39.6 50.3 -0.5 948 81 158.0 16 26.7 31 5 0 10 0
20 11 54.8 35.1 45.5 7.7 1103 29 76.4 8 0.0 12 0 0 23 2
20 12 38.4 24.0 31.2 6.0 2028 0 56.7 10 6.4 25 0 4 53 0
------------------------------------------------------------------------------------
64.7 42.4 52.0 4.3 8791 2002 158.0 Jan -5.5 Feb 173 6 178 3
Precipitation (in)
Dep. Max Days of Rain
From Obs. >=
YR MO Total Norm Day Date 0.01 0.10 1.00
---------------------------------------------
20 1 0.70 -1.00 0.18 10 15 2 0
20 2 0.29 -1.11 0.15 16 6 1 0
20 3 2.12 -0.08 1.16 28 13 4 1
20 4 4.02 0.12 1.86 29 19 9 1
20 5 12.78 8.98 2.00 17 24 20 4
20 6 6.53 2.23 1.25 26 21 12 4
20 7 3.81 -0.59 0.58 9 13 11 0
20 8 0.90 -3.50 0.39 15 4 3 0
20 9 4.57 0.97 0.45 8 17 15 0
20 10 5.12 2.42 1.45 22 22 8 2
20 11 1.91 -1.19 0.49 10 11 7 0
20 12 2.74 0.64 0.76 12 11 7 0
---------------------------------------------
45.49 7.89 2.00 May 176 99 12
Wind Speed (mph)
Dom
YR MO Avg. Hi Date Dir
------------------------------
20 1 1.3 20.0 5 SW
20 2 1.3 20.0 2 WSW
20 3 1.3 25.0 29 SW
20 4 1.4 27.0 8 WSW
20 5 0.5 22.0 7 WSW
20 6 0.3 19.0 9 E
20 7 0.2 17.0 7 NW
20 8 0.2 24.0 10 NW
20 9 0.3 21.0 30 WNW
20 10 0.5 21.0 1 SW
20 11 1.5 30.0 15 SSW
20 12 1.2 22.0 21 SW
------------------------------
0.8 30.0 Nov SW