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Report for 2026
Annual Climatological Summary for 2026
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
------------------------------------------------------------------------------------
26 1 29.6 15.5 22.1 2.8 1793 0 58.9 8 -10.3 23 0 21 35 6
26 2 45.9 23.2 32.8 8.5 1030 2 158.0 18 0.0 22 1 0 29 1
26 3 56.5 32.9 43.7 8.5 922 19 81.6 30 12.6 17 1 2 19 0
26 4 68.3 44.6 55.3 8.3 420 62 158.0 2 28.4 7 6 0 4 0
26 5 72.8 48.5 60.4 2.0 256 94 89.0 27 30.4 2 7 0 1 0
26 6 79.2 60.6 69.4 1.3 60 219 93.2 30 49.6 15 15 0 0 0
26 7 86.7 66.5 76.0 3.4 12 383 96.9 14 53.3 23 28 0 0 0
26 8 81.8 64.9 72.4 1.8 13 287 87.4 4 55.7 24 24 0 0 0
26 9 79.4 61.1 68.8 6.1 63 185 97.8 2 50.0 14 16 0 0 0
26 10 72.7 53.3 61.6 10.8 108 40 88.4 12 43.9 16 4 0 0 0
26 11
26 12
------------------------------------------------------------------------------------
67.3 47.1 56.3 5.4 4681 1295 158.0 Feb -10.3 Jan 102 23 88 7
Precipitation (in)
Dep. Max Days of Rain
From Obs. >=
YR MO Total Norm Day Date 0.01 0.10 1.00
---------------------------------------------
26 1 3.24 1.54 1.46 8 9 3 2
26 2 0.20 -1.20 0.06 17 5 0 0
26 3 6.63 4.43 1.40 15 16 11 4
26 4 4.07 0.17 0.90 2 23 11 0
26 5 0.13 -3.67 0.07 2 5 0 0
26 6 0.97 -3.33 0.12 28 28 3 0
26 7 1.85 -2.55 0.44 30 33 3 0
26 8 4.99 0.59 1.19 11 16 13 2
26 9 5.18 1.58 2.38 17 8 4 2
26 10 2.68 -0.02 1.29 1 7 2 2
26 11
26 12
---------------------------------------------
29.94 -2.46 2.38 Sep 150 50 12
Wind Speed (mph)
Dom
YR MO Avg. Hi Date Dir
------------------------------
26 1 0.0 0.0 0 ---
26 2 0.6 23.0 20 SW
26 3 1.4 45.0 13 SSW
26 4 1.4 21.0 18 SSW
26 5 0.7 18.0 4 S
26 6 0.5 15.0 11 SE
26 7 0.3 25.0 3 N
26 8 0.3 19.0 11 NNW
26 9 0.2 8.0 9 E
26 10 0.4 16.0 16 NW
26 11
26 12
------------------------------
0.6 45.0 Mar SSW