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September Normals for Irving, IL

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 61 83 72 0.1 0 7 2 60 83 71 0.1 1 7 3 60 82 71 0.1 1 7 4 60 82 71 0.1 1 7 5 59 82 71 0.1 1 6 6 59 82 70 0.1 1 6 7 59 82 70 0.1 1 6 8 58 81 70 0.1 1 6 9 58 81 70 0.1 1 6 10 58 81 69 0.1 1 5 11 57 80 69 0.1 1 5 12 57 80 69 0.1 1 5 13 57 80 68 0.1 1 5 14 56 80 68 0.1 2 5 15 56 79 68 0.1 2 4 16 56 79 67 0.1 2 4 17 55 79 67 0.1 2 4 18 55 79 67 0.1 2 4 19 55 78 66 0.09 2 4 20 54 78 66 0.09 2 3 21 54 78 66 0.09 3 3 22 53 77 65 0.09 3 3 23 53 77 65 0.09 3 3 24 53 77 65 0.09 3 3 25 52 76 64 0.09 3 3 26 52 76 64 0.09 3 3 27 52 76 64 0.09 4 2 28 51 75 63 0.09 4 2 29 51 75 63 0.09 4 2 30 50 75 63 0.09 4 2 Month 56 79 67 2.88 60 132 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