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September Normals for Isabel, SD

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 50 79 65 0.04 4 4 2 50 79 64 0.04 4 4 3 49 78 64 0.04 5 3 4 49 78 63 0.03 5 3 5 49 77 63 0.04 5 3 6 48 77 62 0.04 5 3 7 48 76 62 0.04 5 2 8 47 76 62 0.04 6 2 9 47 75 61 0.04 6 2 10 46 75 61 0.04 6 2 11 46 75 60 0.04 6 2 12 46 74 60 0.04 7 2 13 45 74 60 0.04 7 1 14 45 73 59 0.04 7 1 15 44 73 59 0.04 8 1 16 44 73 58 0.04 8 1 17 44 72 58 0.04 8 1 18 43 72 58 0.04 8 1 19 43 71 57 0.04 9 1 20 42 71 57 0.04 9 1 21 42 70 56 0.04 9 1 22 42 70 56 0.04 10 1 23 41 70 55 0.04 10 0 24 41 69 55 0.04 10 0 25 41 69 55 0.04 11 0 26 40 68 54 0.04 11 0 27 40 68 54 0.04 11 0 28 39 68 54 0.04 12 0 29 39 67 53 0.04 12 0 30 39 67 53 0.05 12 0 Month 44 73 59 1.2 236 42 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