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
02/01/2010 to 02/09/2010
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
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Northwest 23.0 19.4 3.6 0.42 0.28 0.14 152
Northeast 24.5 20.9 3.6 0.28 0.30 -0.02 94
West 25.0 23.3 1.6 0.59 0.30 0.29 197
Central 24.5 23.0 1.6 0.58 0.32 0.26 181
East 24.0 23.0 1.1 0.42 0.38 0.04 111
West-southwest 26.5 25.9 0.6 0.82 0.45 0.37 182
East-southeast 26.7 27.1 -0.3 0.85 0.62 0.24 138
Southwest 28.6 29.9 -1.4 1.18 0.66 0.53 181
Southeast 28.4 30.4 -2.0 1.12 0.74 0.38 152
State 25.6 24.5 1.1 0.68 0.44 0.24 155
Dev means Deviation From Normal, Percent means Percent of Normal
Last Month
Illinois
01/01/2010 to 01/31/2010
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 16.3 19.6 -3.3 1.44 1.40 0.03 102
Northeast 18.7 21.0 -2.3 1.05 1.65 -0.60 64
West 18.3 23.7 -5.4 1.75 1.44 0.32 122
Central 18.1 23.2 -5.0 1.52 1.62 -0.10 94
East 19.1 23.3 -4.2 1.20 1.75 -0.55 68
West-southwest 21.3 26.3 -5.0 1.54 1.84 -0.30 84
East-southeast 22.9 27.3 -4.4 1.52 2.36 -0.84 64
Southwest 26.2 30.2 -4.0 1.71 2.58 -0.87 66
Southeast 26.9 30.7 -3.8 1.95 3.01 -1.06 65
State 20.6 24.8 -4.2 1.50 1.93 -0.43 78
Dev means Deviation From Normal, Percent means Percent of Normal
Last 90 Days
Illinois
11/11/2009 to 02/09/2010
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 25.0 25.0 0.0 7.28 5.29 1.99 138
Northeast 26.6 26.3 0.2 6.25 6.01 0.24 104
West 27.5 28.6 -1.1 8.99 5.72 3.28 157
Central 27.3 28.3 -1.0 9.17 6.25 2.92 147
East 27.8 28.4 -0.7 7.87 6.63 1.24 119
West-southwest 30.0 31.1 -1.1 10.81 7.18 3.63 151
East-southeast 31.0 32.1 -1.1 9.95 8.65 1.30 115
Southwest 33.4 34.5 -1.2 9.83 9.64 0.19 102
Southeast 34.0 35.1 -1.1 9.39 10.36 -0.97 91
State 29.0 29.7 -0.8 8.84 7.19 1.65 123
Dev means Deviation From Normal, Percent means Percent of Normal
Last 120 Days
Illinois
10/12/2009 to 02/09/2010
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 30.4 30.6 -0.2 12.09 8.09 4.00 149
Northeast 31.7 31.8 -0.1 11.42 8.89 2.53 128
West 33.0 34.0 -1.0 14.85 8.67 6.17 171
Central 32.8 33.7 -0.9 15.27 9.17 6.10 167
East 33.2 33.7 -0.5 13.17 9.52 3.65 138
West-southwest 35.1 36.3 -1.1 17.81 10.21 7.61 175
East-southeast 36.0 37.1 -1.1 14.92 11.79 3.13 127
Southwest 38.1 39.3 -1.2 16.15 13.04 3.10 124
Southeast 38.7 39.8 -1.0 14.31 13.72 0.59 104
State 34.1 34.9 -0.8 14.46 10.22 4.24 141
Dev means Deviation From Normal, Percent means Percent of Normal
Last 180 Days
Illinois
08/13/2009 to 02/09/2010
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 40.5 41.8 -1.3 20.91 15.17 5.74 138
Northeast 41.6 42.7 -1.1 19.34 15.71 3.63 123
West 42.9 44.9 -2.0 24.96 15.45 9.51 162
Central 42.7 44.5 -1.9 24.20 15.49 8.70 156
East 43.1 44.4 -1.3 21.47 15.75 5.72 136
West-southwest 44.7 46.8 -2.0 28.63 16.15 12.48 177
East-southeast 45.8 47.4 -1.6 23.71 17.93 5.78 132
Southwest 47.5 49.2 -1.7 26.30 19.13 7.17 137
Southeast 48.3 49.6 -1.4 24.51 19.61 4.90 125
State 43.9 45.5 -1.6 23.76 16.60 7.16 143
Dev means Deviation From Normal, Percent means Percent of Normal
Year-To-Date
Illinois
01/01/2010 to 02/09/2010
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 17.8 19.6 -1.7 1.85 1.68 0.18 111
Northeast 20.0 21.0 -1.0 1.33 1.94 -0.61 68
West 19.7 23.6 -3.9 2.35 1.74 0.61 135
Central 19.6 23.1 -3.5 2.09 1.94 0.15 108
East 20.2 23.2 -3.0 1.61 2.13 -0.51 76
West-southwest 22.4 26.2 -3.8 2.36 2.29 0.07 103
East-southeast 23.7 27.2 -3.6 2.38 2.98 -0.60 80
Southwest 26.7 30.1 -3.4 2.90 3.24 -0.34 89
Southeast 27.2 30.6 -3.5 3.07 3.75 -0.68 82
State 21.7 24.7 -3.0 2.18 2.37 -0.18 92
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