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
07/01/2009 to 07/03/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
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Northwest 63.1 72.2 -9.1 0.00 0.39 -0.39 1
Northeast 61.9 71.6 -9.7 0.01 0.40 -0.39 3
West 67.0 75.1 -8.1 0.00 0.42 -0.42 0
Central 65.2 74.0 -8.8 0.00 0.36 -0.35 1
East 64.3 73.4 -9.1 0.00 0.38 -0.38 1
West-southwest 68.3 75.9 -7.6 0.00 0.36 -0.36 0
East-southeast 68.1 75.7 -7.6 0.00 0.44 -0.44 0
Southwest 71.8 76.9 -5.1 0.00 0.44 -0.44 0
Southeast 70.9 76.9 -6.0 0.00 0.52 -0.52 0
State 66.5 74.5 -8.0 0.00 0.41 -0.41 1
Dev means Deviation From Normal, Percent means Percent of Normal
Last Month
Illinois
06/01/2009 to 06/30/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
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Northwest 69.0 69.9 -0.9 5.60 4.44 1.16 126
Northeast 67.7 69.2 -1.6 5.51 4.13 1.38 133
West 71.9 72.0 -0.1 6.45 3.98 2.47 162
Central 71.5 71.6 -0.1 5.33 4.03 1.30 132
East 71.5 71.4 0.1 4.65 4.14 0.51 112
West-southwest 73.3 72.8 0.5 5.07 3.81 1.25 133
East-southeast 74.1 73.0 1.1 5.14 4.07 1.08 127
Southwest 75.8 73.8 1.9 4.77 4.00 0.76 119
Southeast 76.3 74.1 2.2 4.47 4.08 0.38 109
State 72.2 71.9 0.3 5.24 4.08 1.16 129
Dev means Deviation From Normal, Percent means Percent of Normal
Last 90 Days
Illinois
04/04/2009 to 07/03/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 59.3 60.8 -1.5 15.19 12.14 3.05 125
Northeast 58.4 60.1 -1.7 15.06 11.80 3.26 128
West 62.0 63.3 -1.3 18.41 12.24 6.18 150
Central 61.6 62.8 -1.2 17.10 11.83 5.26 144
East 61.6 62.4 -0.8 15.46 11.79 3.67 131
West-southwest 63.5 64.4 -0.9 15.79 11.92 3.87 133
East-southeast 64.2 64.5 -0.3 18.68 12.44 6.24 150
Southwest 65.8 65.7 0.0 18.71 12.75 5.95 147
Southeast 66.4 66.0 0.4 17.59 13.46 4.13 131
State 62.4 63.2 -0.9 16.81 12.22 4.59 138
Dev means Deviation From Normal, Percent means Percent of Normal
Last 120 Days
Illinois
03/05/2009 to 07/03/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 54.6 55.3 -0.7 21.21 14.64 6.56 145
Northeast 54.0 54.7 -0.7 21.01 14.33 6.68 147
West 57.5 58.0 -0.5 24.20 15.03 9.17 161
Central 57.2 57.4 -0.3 22.98 14.76 8.22 156
East 57.4 57.1 0.4 20.56 14.85 5.71 138
West-southwest 59.4 59.3 0.1 19.51 15.15 4.36 129
East-southeast 60.4 59.5 0.9 22.10 15.99 6.11 138
Southwest 62.1 61.0 1.1 22.06 16.72 5.34 132
Southeast 62.6 61.3 1.4 21.60 17.66 3.93 122
State 58.2 58.0 0.1 21.61 15.37 6.24 141
Dev means Deviation From Normal, Percent means Percent of Normal
Last 180 Days
Illinois
01/04/2009 to 07/03/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 42.7 44.5 -1.8 24.19 17.61 6.58 137
Northeast 42.6 44.6 -2.0 24.92 17.61 7.31 142
West 46.5 47.7 -1.3 26.72 18.33 8.39 146
Central 45.7 47.2 -1.4 25.87 18.25 7.62 142
East 46.0 46.9 -0.9 23.73 18.41 5.32 129
West-southwest 48.7 49.4 -0.7 22.08 19.09 2.99 116
East-southeast 49.4 49.9 -0.5 26.52 20.77 5.75 128
Southwest 51.8 51.8 -0.1 26.29 21.89 4.40 120
Southeast 52.3 52.1 0.2 26.38 23.73 2.65 111
State 47.1 48.1 -1.0 25.07 19.37 5.71 129
Dev means Deviation From Normal, Percent means Percent of Normal
Year-To-Date
Illinois
01/01/2009 to 07/03/2009
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
-----------------------------------------------------------------------------
Northwest 42.4 44.2 -1.8 24.20 17.84 6.36 136
Northeast 42.3 44.2 -2.0 24.92 17.85 7.07 140
West 46.2 47.4 -1.2 26.72 18.53 8.19 144
Central 45.4 46.8 -1.4 25.87 18.47 7.40 140
East 45.7 46.6 -0.9 23.73 18.65 5.08 127
West-southwest 48.4 49.1 -0.6 22.08 19.32 2.76 114
East-southeast 49.1 49.6 -0.4 26.53 21.05 5.47 126
Southwest 51.5 51.5 0.0 26.29 22.21 4.08 118
Southeast 52.1 51.8 0.3 26.39 24.07 2.32 110
State 46.8 47.7 -0.9 25.08 19.62 5.46 128
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