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September Normals for Decatur, TN

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 61 81 71 0.13 0 6 2 61 81 71 0.13 0 6 3 61 81 71 0.13 0 6 4 60 80 70 0.13 0 6 5 60 80 70 0.14 1 6 6 60 80 70 0.14 1 5 7 60 80 70 0.14 1 5 8 59 79 69 0.14 1 5 9 59 79 69 0.14 1 5 10 59 79 69 0.14 1 5 11 59 79 69 0.14 1 5 12 58 78 68 0.14 1 5 13 58 78 68 0.14 1 4 14 58 78 68 0.14 2 4 15 57 78 68 0.14 2 4 16 57 77 67 0.13 2 4 17 57 77 67 0.13 2 4 18 56 77 67 0.13 2 4 19 56 76 66 0.13 2 4 20 56 76 66 0.13 3 3 21 55 76 66 0.13 3 3 22 55 76 65 0.13 3 3 23 54 75 65 0.13 3 3 24 54 75 64 0.12 3 3 25 53 75 64 0.12 4 3 26 53 74 64 0.12 4 3 27 53 74 63 0.12 4 2 28 52 74 63 0.11 4 2 29 52 73 63 0.11 5 2 30 51 73 62 0.11 5 2 Month 57 77 67 3.91 62 122 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