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September Normals for Chappaquiddick Island, MA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 62 79 70 0.14 0 5 2 61 78 70 0.14 0 5 3 61 78 70 0.14 0 5 4 61 78 69 0.14 0 4 5 61 78 69 0.14 0 4 6 60 77 69 0.14 0 4 7 60 77 69 0.14 0 4 8 60 77 68 0.14 0 4 9 59 76 68 0.13 0 3 10 59 76 68 0.13 1 3 11 59 76 67 0.13 1 3 12 59 76 67 0.13 1 3 13 58 75 67 0.13 1 3 14 58 75 67 0.13 1 2 15 58 75 66 0.13 1 2 16 57 74 66 0.13 1 2 17 57 74 66 0.13 2 2 18 57 74 65 0.13 2 2 19 56 73 65 0.13 2 2 20 56 73 64 0.13 2 2 21 55 73 64 0.13 2 1 22 55 72 64 0.12 3 1 23 55 72 63 0.12 3 1 24 54 72 63 0.12 3 1 25 54 71 63 0.12 4 1 26 54 71 62 0.12 4 1 27 53 70 62 0.12 4 1 28 53 70 61 0.12 4 1 29 52 70 61 0.12 5 1 30 52 69 61 0.12 5 1 Month 57 74 66 3.89 52 74 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