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September Normals for Brooklyn, IA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 57 79 68 0.14 2 4 2 56 79 67 0.14 2 4 3 56 78 67 0.14 2 4 4 55 78 67 0.13 2 4 5 55 78 67 0.13 2 3 6 55 78 66 0.13 2 3 7 54 77 66 0.13 2 3 8 54 77 66 0.13 2 3 9 54 77 65 0.13 2 3 10 53 76 65 0.12 3 2 11 53 76 64 0.12 3 2 12 52 76 64 0.12 3 2 13 52 75 64 0.12 3 2 14 52 75 63 0.12 3 2 15 51 75 63 0.12 4 2 16 51 74 63 0.11 4 2 17 51 74 62 0.11 4 1 18 50 74 62 0.11 4 1 19 50 74 62 0.11 4 1 20 49 73 61 0.11 5 1 21 49 73 61 0.11 5 1 22 49 73 61 0.11 5 1 23 48 72 60 0.1 5 1 24 48 72 60 0.1 6 1 25 47 72 60 0.1 6 1 26 47 71 59 0.1 6 1 27 47 71 59 0.1 7 0 28 46 71 59 0.1 7 0 29 46 70 58 0.1 7 0 30 46 70 58 0.1 8 0 Month 51 75 63 3.49 120 55 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