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September Normals for Grafton, IA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 54 75 65 0.14 3 3 2 54 75 64 0.14 3 2 3 53 75 64 0.13 3 2 4 53 75 64 0.13 3 2 5 52 74 63 0.13 4 2 6 52 74 63 0.13 4 2 7 52 74 63 0.12 4 2 8 51 74 62 0.12 4 2 9 51 73 62 0.12 4 1 10 51 73 62 0.12 5 1 11 50 73 61 0.12 5 1 12 50 72 61 0.11 5 1 13 49 72 61 0.11 5 1 14 49 72 60 0.11 5 1 15 49 71 60 0.11 6 1 16 48 71 60 0.11 6 1 17 48 71 59 0.1 6 1 18 47 70 59 0.1 6 0 19 47 70 59 0.1 7 0 20 47 70 58 0.1 7 0 21 46 69 58 0.1 7 0 22 46 69 58 0.1 8 0 23 46 69 57 0.1 8 0 24 45 69 57 0.09 8 0 25 45 68 57 0.09 9 0 26 45 68 56 0.09 9 0 27 44 67 56 0.09 9 0 28 44 67 55 0.09 9 0 29 44 67 55 0.09 10 0 30 43 66 55 0.09 10 0 Month 49 71 60 3.28 182 26 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