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 2021
Annual Climatological Summary for 2021
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
------------------------------------------------------------------------------------
21 1 33.1 22.6 28.0 8.7 2293 0 39.7 21 5.5 23 0 0 60 0
21 2 26.4 9.9 18.3 -6.0 2381 0 54.1 27 -9.1 7 0 27 49 11
21 3 53.3 33.3 43.1 7.9 1167 2 69.2 22 0.0 21 0 0 25 1
21 4 63.3 41.4 51.4 4.4 762 63 88.1 27 21.1 2 6 0 7 0
21 5 70.9 47.6 60.0 1.6 491 179 88.8 24 0.0 1 18 0 2 2
21 6 84.6 63.2 73.5 5.4 52 534 93.6 11 47.1 1 42 0 0 0
21 7 82.8 65.2 73.7 1.1 20 509 96.1 26 54.8 3 38 0 0 0
21 8 87.1 65.8 75.2 4.6 21 628 95.6 27 57.1 15 56 0 0 0
21 9 81.1 56.3 67.7 5.0 130 274 91.9 19 0.0 13 37 0 1 1
21 10 66.3 49.0 57.3 6.5 513 83 87.8 1 0.0 29 6 0 2 2
21 11 48.2 30.1 39.2 1.4 1363 0 66.8 8 0.0 3 0 0 32 1
21 12 44.5 29.0 36.8 11.6 1489 0 63.8 16 10.7 7 0 2 40 0
------------------------------------------------------------------------------------
61.8 42.8 52.0 4.4 10688 2275 96.1 Jul -9.1 Feb 203 29 218 18
Precipitation (in)
Dep. Max Days of Rain
From Obs. >=
YR MO Total Norm Day Date 0.01 0.10 1.00
---------------------------------------------
21 1 0.56 -1.14 0.08 14 16 0 0
21 2 1.83 0.43 0.24 3 17 8 0
21 3 2.52 0.32 0.45 17 18 8 0
21 4 1.04 -2.86 0.14 8 21 4 0
21 5 0.27 -3.53 0.02 8 21 0 0
21 6 3.64 -0.66 0.73 20 22 10 0
21 7 3.45 -0.95 0.79 15 27 6 0
21 8 4.52 0.12 0.49 8 21 15 0
21 9 1.81 -1.79 0.35 21 15 5 0
21 10 5.51 2.81 1.01 7 25 10 2
21 11 0.06 -3.04 0.01 17 6 0 0
21 12 2.02 -0.08 0.40 26 20 7 0
---------------------------------------------
27.23-10.37 1.01 Oct 229 73 2
Wind Speed (mph)
Dom
YR MO Avg. Hi Date Dir
------------------------------
21 1 0.9 18.0 19 SW
21 2 1.3 23.0 28 W
21 3 1.3 25.0 28 S
21 4 1.0 19.0 12 SSW
21 5 0.4 17.0 1 SSE
21 6 0.3 14.0 20 WSW
21 7 0.2 17.0 29 NW
21 8 0.1 19.0 10 ESE
21 9 0.4 18.0 8 WNW
21 10 0.2 15.0 16 NW
21 11 1.0 24.0 21 WSW
21 12 0.9 26.0 6 SSW
------------------------------
0.7 26.0 Dec SW