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September Normals for Jefferson Park, IL

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 58 78 68 0.14 1 5 2 58 78 68 0.14 1 4 3 58 78 68 0.13 1 4 4 58 78 68 0.13 1 4 5 57 78 67 0.13 1 4 6 57 77 67 0.13 1 3 7 57 77 67 0.12 1 3 8 56 77 67 0.12 2 3 9 56 77 66 0.12 2 3 10 56 76 66 0.12 2 3 11 55 76 66 0.11 2 3 12 55 76 65 0.11 2 2 13 55 75 65 0.11 2 2 14 54 75 65 0.11 2 2 15 54 75 64 0.11 3 2 16 53 75 64 0.1 3 2 17 53 74 64 0.1 3 2 18 53 74 63 0.1 3 2 19 52 74 63 0.1 4 2 20 52 73 63 0.1 4 1 21 52 73 62 0.1 4 1 22 51 73 62 0.09 4 1 23 51 72 62 0.09 5 1 24 50 72 61 0.09 5 1 25 50 72 61 0.09 5 1 26 50 71 60 0.09 6 1 27 49 71 60 0.09 6 1 28 49 70 60 0.09 6 1 29 48 70 59 0.09 7 1 30 48 70 59 0.09 7 1 Month 54 75 64 3.24 96 66 Data Controls Monthly: January February March April May June July August September October November December   | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather