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National Weather Service
Weather Information for Joliet, Illinois
  MAPMAP
Weather Forecast
Issued at 23:16  (Local time)  19 Oct  2018 
Date Temperature oC Weather
Minimum Maximum
20 Oct
( Sat ) 		3 10 Scattered Rain/Snow and Breezy
Scattered Rain/Snow and Breezy
21 Oct
( Sun ) 		-3 9 Sunny
Sunny
22 Oct
( Mon ) 		2 15 Mostly Sunny
Mostly Sunny
23 Oct
( Tue ) 		3 12 Sunny
Sunny
24 Oct
( Wed ) 		1 12 Sunny
Sunny
25 Oct
( Thu ) 		2 12 Partly Sunny
Partly Sunny
26 Oct
( Fri ) 		3 13 Mostly Cloudy
Mostly Cloudy
>> Click here for temperatures in oF
 
Climatological Information
Month Mean Temperature oC Mean Total Rainfall (mm) Mean Number of Rain Days
Daily
Minimum		 Daily
Maximum
Jan -8.6 -0.3 45.7 10.7
Feb -6.4 2.2 43.4 8.9
Mar -1.5 8.6 57.2 10.6
Apr 4.0 15.9 88.6 11.4
May 9.3 21.9 103.6 11.4
Jun 15.4 27.2 98.6 10.1
Jul 17.7 29.0 110.0 9.4
Aug 17.1 28.0 105.7 9.0
Sep 12.5 24.6 76.5 8.2
Oct 5.9 17.7 72.1 9.5
Nov 0.7 9.7 77.7 10.8
Dec -6.2 1.8 55.9 11.3
>> Click here for temperatures in oF

Remarks:
* Climatological information is based on monthly averages for the 30-year period 1981-2010.
* Attention: Please note that the averaging period for climatological information and the definition of "Mean Number of Precipitation/Rain Days" quoted in this web site may be different for different countries. Hence, care should be taken when city climatologies are compared.