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Report for 2019
Annual Climatological Summary for 2019
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
------------------------------------------------------------------------------------
19 1 28.3 14.5 21.5 2.2 2608 0 53.3 7 -22.6 30 0 21 56 11
19 2 34.1 18.5 26.7 2.4 1915 0 48.8 4 0.8 1 0 6 44 0
19 3 46.4 27.9 36.9 1.7 1431 0 64.4 28 -3.0 4 0 2 35 1
19 4 60.3 39.5 49.5 2.5 951 34 80.0 21 23.9 1 2 0 10 0
19 5 69.3 48.3 58.1 -0.3 537 119 84.4 25 37.7 14 10 0 0 0
19 6 79.8 58.1 68.1 0.0 141 328 92.2 30 45.8 14 34 0 0 0
19 7 88.0 66.7 76.2 3.6 18 700 96.3 13 57.5 25 57 0 0 0
19 8 82.7 62.3 71.6 1.0 51 457 90.6 3 54.0 29 40 0 0 0
19 9 84.3 60.6 69.1 6.4 87 329 158.0 3 53.4 24 31 0 0 0
19 10 75.9 41.5 51.8 1.0 916 126 158.0 2 24.4 31 12 0 4 0
19 11 46.1 26.2 34.6 -3.2 1726 25 158.0 20 6.9 12 2 2 39 0
19 12 52.2 25.6 34.8 9.6 1665 65 158.0 1 11.4 18 5 2 43 0
------------------------------------------------------------------------------------
62.3 40.8 49.9 2.2 12049 2186 158.0 Sep -22.6 Jan 193 33 231 12
Precipitation (in)
Dep. Max Days of Rain
From Obs. >=
YR MO Total Norm Day Date 0.01 0.10 1.00
---------------------------------------------
19 1 1.20 -0.50 0.37 7 14 4 0
19 2 5.31 3.91 0.71 23 27 12 0
19 3 4.55 2.35 0.56 9 21 12 0
19 4 11.37 7.47 1.26 29 31 21 4
19 5 17.62 13.82 2.05 27 44 34 2
19 6 9.16 4.86 0.82 26 36 22 0
19 7 8.93 4.53 1.95 2 17 13 3
19 8 6.68 2.28 0.88 18 22 18 0
19 9 11.46 7.86 1.09 27 30 22 4
19 10 10.06 7.36 2.04 26 26 20 2
19 11 1.10 -2.00 0.37 1 7 3 0
19 12 2.41 0.31 0.74 29 11 4 0
---------------------------------------------
89.85 52.25 2.05 May 286 185 15
Wind Speed (mph)
Dom
YR MO Avg. Hi Date Dir
------------------------------
19 1 1.3 27.0 8 WSW
19 2 1.2 29.0 24 SW
19 3 1.5 20.0 5 SW
19 4 1.3 25.0 26 SSW
19 5 0.6 18.0 19 SSW
19 6 0.3 19.0 30 WNW
19 7 0.2 26.0 2 WSW
19 8 0.3 14.0 28 WNW
19 9 0.2 13.0 25 NW
19 10 0.5 17.0 16 WNW
19 11 1.0 27.0 27 WSW
19 12 1.2 21.0 4 SW
------------------------------
0.8 29.0 Feb SW