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September Normals for Cooper, SD

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 54 82 68 0.03 2 5 2 54 82 68 0.03 2 5 3 53 81 67 0.03 3 5 4 53 81 67 0.03 3 5 5 53 80 67 0.04 3 4 6 52 80 66 0.04 3 4 7 52 80 66 0.04 3 4 8 51 79 65 0.04 4 4 9 51 79 65 0.04 4 4 10 51 78 65 0.04 4 3 11 50 78 64 0.04 4 3 12 50 77 64 0.04 4 3 13 50 77 63 0.04 5 3 14 49 77 63 0.04 5 3 15 49 76 62 0.04 5 2 16 48 76 62 0.04 5 2 17 48 75 62 0.04 5 2 18 48 75 61 0.04 6 2 19 47 75 61 0.04 6 2 20 47 74 60 0.04 6 2 21 46 74 60 0.04 6 1 22 46 73 60 0.04 7 1 23 46 73 59 0.04 7 1 24 45 72 59 0.05 7 1 25 45 72 58 0.05 8 1 26 45 72 58 0.05 8 1 27 44 71 58 0.05 8 1 28 44 71 57 0.05 8 1 29 44 70 57 0.05 9 1 30 43 70 57 0.05 9 1 Month 49 76 62 1.23 159 77 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