NOAA-Style Climate Reports
Select a Year or Month report
2024: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2023: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2022: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2021: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2020: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2019: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2017: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2024: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2023: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2022: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2021: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2020: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2019: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2017: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Report for 2018
Annual Climatological Summary for 2018
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
------------------------------------------------------------------------------------
18 1 31.4 15.5 24.0 4.7 2534 0 57.0 11 -10.8 2 0 24 56 10
18 2 38.1 18.6 28.7 4.4 2027 0 63.4 20 -3.1 5 0 14 46 2
18 3 46.5 28.3 36.4 1.2 1769 0 58.7 31 17.7 9 0 0 46 0
18 4 51.8 31.2 41.7 -5.3 1368 15 80.7 30 0.0 4 2 0 32 2
18 5 78.5 54.7 65.6 7.2 209 240 99.2 27 44.2 12 23 0 0 0
18 6 81.6 60.2 71.8 3.7 43 339 95.2 29 0.0 16 29 0 2 2
18 7 85.2 64.6 75.7 3.1 21 617 93.8 13 0.0 16 45 0 1 1
18 8 86.7 67.4 75.8 5.2 28 675 95.0 26 53.8 23 48 0 0 0
18 9 79.4 58.6 67.4 4.7 184 326 93.8 4 37.9 29 32 0 0 0
18 10 61.3 42.8 51.4 0.6 852 61 85.9 3 24.6 21 6 0 7 0
18 11 39.8 28.9 34.3 -3.5 1628 0 53.2 2 15.9 14 0 2 32 0
18 12 39.9 25.7 32.5 7.3 1983 0 52.4 27 12.5 7 0 2 51 0
------------------------------------------------------------------------------------
60.0 41.4 50.4 2.8 12652 2276 99.2 May -10.8 Jan 185 42 273 17
Precipitation (in)
Dep. Max Days of Rain
From Obs. >=
YR MO Total Norm Day Date 0.01 0.10 1.00
---------------------------------------------
18 1 4.04 2.34 0.90 22 22 10 0
18 2 7.62 6.22 2.07 20 24 16 2
18 3 4.14 1.94 0.59 1 22 12 0
18 4 4.12 0.22 0.69 15 30 10 0
18 5 6.97 3.17 1.70 21 20 14 1
18 6 13.33 9.03 1.23 21 26 17 8
18 7 1.17 -3.23 0.57 14 11 3 0
18 8 7.27 2.87 1.23 28 23 13 2
18 9 5.78 2.18 1.00 3 20 10 2
18 10 9.20 6.50 0.97 5 34 19 0
18 11 5.35 2.25 0.65 4 32 11 0
18 12 5.76 3.66 1.25 1 23 9 2
---------------------------------------------
74.75 37.15 2.07 Feb 287 144 17
Wind Speed (mph)
Dom
YR MO Avg. Hi Date Dir
------------------------------
18 1 1.2 17.0 12 SW
18 2 1.0 22.0 25 SW
18 3 1.1 24.0 31 SW
18 4 1.2 24.0 1 SW
18 5 0.6 24.0 4 S
18 6 0.3 20.0 3 W
18 7 0.4 14.0 5 NW
18 8 0.4 16.0 28 WSW
18 9 0.3 17.0 25 W
18 10 0.5 26.0 20 WNW
18 11 1.0 24.0 9 WSW
18 12 1.0 22.0 23 SW
------------------------------
0.8 26.0 Oct WSW