Both rainfall totals and temperatures in August look far more promising than July. Here is the breakdown by climate division in August for Illinois. I apologize for the formatting – you will have to scroll left and right to see the entire table. By the way, in Illinois the climate divisions and crop reporting districts cover the same areas (see map below). I have a set of tables like these that update daily at Current Conditions in Illinois.
Temperatures for August are running 0.3 to 2.3 degrees below normal. Precipitation is running 0.4 to 1.4 inches below normal in the climate divisions to the north and west. The remaining climate divisions are above normal.
Illinois
08/01/2012 to 08/20/2012
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
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Northwest 69.4 71.7 -2.3 1.97 2.98 -1.01 66
Northeast 70.0 71.7 -1.7 1.97 2.84 -0.87 69
West 72.0 74.1 -2.1 1.08 2.50 -1.42 43
Central 71.3 73.2 -1.9 2.04 2.51 -0.47 81
East 71.0 72.6 -1.6 3.06 2.59 0.47 118
West-southwest 73.3 74.8 -1.4 2.31 2.16 0.14 107
East-southeast 73.7 74.8 -1.1 3.38 2.20 1.19 154
Southwest 75.8 76.1 -0.3 2.56 2.21 0.35 116
Southeast 75.7 76.2 -0.5 3.19 2.05 1.14 156
State 72.3 73.8 -1.5 2.39 2.46 -0.07 97
Dev means Deviation From Normal, Percent means Percent of Normal
Here are the temperatures and precipitation since January 1, 2012. While the recent rains are welcome, significant long-term precipitation deficits remain across the state.
Illinois
01/01/2012 to 08/20/2012
Climate <------Temperature-----> <---------Precipitation--------->
Division Actual Normal Dev Actual Normal Dev Percent
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Northwest 54.7 50.1 4.6 16.05 24.09 -8.04 67
Northeast 54.7 50.1 4.7 17.32 24.06 -6.73 72
West 57.4 53.1 4.3 14.39 24.77 -10.38 58
Central 56.8 52.5 4.4 14.19 24.57 -10.38 58
East 56.6 52.1 4.5 17.41 24.92 -7.51 70
West-southwest 59.0 54.6 4.4 18.17 24.71 -6.54 74
East-southeast 59.4 54.9 4.4 18.30 26.88 -8.58 68
Southwest 61.2 56.8 4.5 19.18 27.68 -8.50 69
Southeast 61.7 57.0 4.6 19.24 29.28 -10.04 66
State 57.8 53.3 4.5 17.12 25.52 -8.40 67
