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September Normals for Chatham, NH

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 48 69 58 0.17 7 0 2 47 69 58 0.17 7 0 3 47 69 58 0.17 7 0 4 47 68 58 0.17 8 0 5 47 68 57 0.16 8 0 6 46 68 57 0.16 8 0 7 46 67 57 0.16 9 0 8 46 67 56 0.16 9 0 9 45 67 56 0.16 9 0 10 45 66 56 0.16 9 0 11 45 66 55 0.16 10 0 12 44 66 55 0.16 10 0 13 44 65 55 0.16 10 0 14 44 65 54 0.16 11 0 15 43 65 54 0.16 11 0 16 43 64 54 0.16 11 0 17 43 64 53 0.16 12 0 18 42 64 53 0.16 12 0 19 42 63 53 0.16 12 0 20 42 63 52 0.16 12 0 21 41 63 52 0.16 13 0 22 41 62 52 0.16 13 0 23 41 62 51 0.17 13 0 24 40 62 51 0.17 14 0 25 40 61 51 0.17 14 0 26 40 61 50 0.17 15 0 27 39 61 50 0.17 15 0 28 39 60 50 0.17 15 0 29 38 60 49 0.17 16 0 30 38 60 49 0.17 16 0 Month 43 65 54 4.92 336 0 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