Illinois State Water Survey
Institute of Natural Resource Sustainability
University of Illinois
Institute of Natural Resource Sustainability
University of Illinois
Illinois State Climatologist Office
Jim Angel, state climatologist
Current Climate Conditions in Illinois
Current climate conditions in Illinois are based on preliminary reports. Illinois is divided into 9 climate divisions or crop reporting districts. Temperatures are reported in degrees Fahrenheit. Precipitation is reported in inches.
Current Month
Illinois
11/01/2009 to 11/22/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 44.5 39.7 4.8 0.61 1.80 -1.19 34
Northeast 45.5 40.7 4.8 0.49 2.02 -1.53 24
West 47.3 42.7 4.6 2.74 2.10 0.65 131
Central 46.7 42.3 4.4 2.43 2.08 0.34 117
East 46.7 42.4 4.3 2.18 2.13 0.06 103
West-southwest 48.9 44.5 4.4 3.60 2.40 1.20 150
East-southeast 49.3 45.3 4.1 2.22 2.66 -0.44 83
Southwest 51.4 47.0 4.4 1.64 2.95 -1.32 55
Southeast 51.9 47.5 4.5 1.05 2.91 -1.86 36
State 47.9 43.4 4.5 1.91 2.32 -0.40 83
Dev means Deviation From Normal, Percent means Percent of Normal
Last Month
Illinois
10/01/2009 to 10/31/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 46.5 51.7 -5.3 6.82 2.87 3.95 238
Northeast 47.1 52.1 -5.1 7.00 2.78 4.22 252
West 48.2 54.6 -6.5 8.25 3.00 5.25 275
Central 48.5 54.0 -5.5 8.60 2.89 5.70 297
East 49.2 53.7 -4.5 8.29 2.87 5.42 289
West-southwest 49.9 55.8 -5.9 11.20 2.82 8.37 397
East-southeast 51.0 56.1 -5.0 9.08 3.02 6.06 301
Southwest 52.1 57.2 -5.1 11.03 3.04 7.99 363
Southeast 53.0 57.5 -4.5 9.67 2.99 6.68 323
State 49.3 54.6 -5.3 8.85 2.91 5.94 304
Dev means Deviation From Normal, Percent means Percent of Normal
Last 90 Days
Illinois
08/24/2009 to 11/22/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 52.8 54.4 -1.6 12.25 9.12 3.13 134
Northeast 53.5 54.9 -1.4 11.68 9.20 2.48 127
West 55.0 57.2 -2.2 14.45 9.41 5.04 154
Central 54.8 56.7 -1.9 14.54 8.96 5.57 162
East 55.2 56.5 -1.3 13.36 8.90 4.46 150
West-southwest 56.4 58.5 -2.1 18.37 9.02 9.35 204
East-southeast 57.3 58.8 -1.5 14.13 9.66 4.47 146
Southwest 58.7 60.0 -1.4 16.27 10.04 6.23 162
Southeast 59.5 60.4 -0.9 14.83 9.89 4.94 150
State 55.8 57.4 -1.6 14.43 9.33 5.10 155
Dev means Deviation From Normal, Percent means Percent of Normal
Last 120 Days
Illinois
07/25/2009 to 11/22/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 56.9 58.7 -1.8 18.48 13.04 5.43 142
Northeast 57.7 59.1 -1.5 15.46 13.01 2.45 119
West 59.0 61.4 -2.4 21.08 13.11 7.96 161
Central 58.8 60.8 -2.1 19.87 12.60 7.28 158
East 59.1 60.5 -1.4 17.75 12.59 5.16 141
West-southwest 60.4 62.6 -2.2 22.83 12.35 10.48 185
East-southeast 61.3 62.8 -1.5 17.69 13.12 4.56 135
Southwest 62.6 64.1 -1.4 20.57 13.45 7.11 153
Southeast 63.3 64.4 -1.0 19.42 13.00 6.42 149
State 59.8 61.5 -1.7 19.21 12.91 6.31 149
Dev means Deviation From Normal, Percent means Percent of Normal
Last 180 Days
Illinois
05/26/2009 to 11/22/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 60.4 62.8 -2.4 29.77 21.27 8.50 140
Northeast 60.7 62.9 -2.2 24.33 20.99 3.34 116
West 62.7 65.3 -2.6 31.47 21.19 10.28 149
Central 62.5 64.8 -2.3 29.07 20.42 8.66 142
East 62.7 64.4 -1.7 25.79 20.65 5.15 125
West-southwest 64.1 66.3 -2.3 33.12 19.61 13.51 169
East-southeast 65.0 66.6 -1.6 28.20 21.08 7.12 134
Southwest 66.4 67.7 -1.3 32.76 21.11 11.64 155
Southeast 67.0 68.0 -1.0 31.40 20.91 10.49 150
State 63.3 65.3 -2.0 29.48 20.78 8.70 142
Dev means Deviation From Normal, Percent means Percent of Normal
Year-To-Date
Illinois
01/01/2009 to 11/22/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 49.4 51.5 -2.2 47.32 33.48 13.83 141
Northeast 49.6 51.7 -2.0 42.43 33.49 8.94 127
West 52.5 54.5 -2.0 50.97 34.43 16.54 148
Central 52.0 53.9 -1.9 48.92 33.77 15.15 145
East 52.2 53.6 -1.3 44.45 34.05 10.40 131
West-southwest 54.3 55.9 -1.6 48.53 34.01 14.52 143
East-southeast 55.1 56.3 -1.2 47.95 36.81 11.14 130
Southwest 57.1 57.9 -0.8 52.37 38.00 14.37 138
Southeast 57.6 58.2 -0.6 51.63 39.44 12.18 131
State 53.1 54.7 -1.5 48.08 35.10 12.97 137
Dev means Deviation From Normal, Percent means Percent of Normal
University of Illinois at Urbana-Champaign
- Illinois State Water Survey
- All files and information ©2008
- Last Modified: September 23, 2008