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September Normals for Onawa, IA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 57 82 69 0.11 1 6 2 57 81 69 0.11 1 5 3 56 81 69 0.1 1 5 4 56 81 68 0.1 2 5 5 55 81 68 0.1 2 5 6 55 80 68 0.1 2 4 7 55 80 67 0.1 2 4 8 54 80 67 0.1 2 4 9 54 79 67 0.1 2 4 10 54 79 66 0.1 2 4 11 53 79 66 0.1 2 3 12 53 79 66 0.1 2 3 13 53 78 66 0.1 3 3 14 52 78 65 0.1 3 3 15 52 78 65 0.1 3 3 16 51 78 65 0.1 3 3 17 51 77 64 0.1 3 2 18 51 77 64 0.1 3 2 19 50 77 64 0.1 4 2 20 50 76 63 0.1 4 2 21 50 76 63 0.1 4 2 22 49 76 62 0.1 4 2 23 49 75 62 0.09 5 2 24 48 75 62 0.09 5 1 25 48 75 61 0.09 5 1 26 48 74 61 0.09 5 1 27 47 74 61 0.09 5 1 28 47 74 60 0.09 6 1 29 47 73 60 0.09 6 1 30 46 73 60 0.09 6 1 Month 52 78 65 2.94 98 85 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