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Climatological Normals

September Normals for Plympton, MA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 56 78 67 0.14 1 3 2 56 78 67 0.14 1 3 3 55 77 66 0.14 1 3 4 55 77 66 0.14 1 2 5 55 77 66 0.14 2 2 6 54 76 65 0.14 2 2 7 54 76 65 0.14 2 2 8 53 76 65 0.14 2 2 9 53 76 64 0.13 2 2 10 53 75 64 0.13 2 1 11 52 75 64 0.13 3 1 12 52 75 64 0.13 3 1 13 52 74 63 0.13 3 1 14 51 74 63 0.13 3 1 15 51 74 63 0.13 3 1 16 51 74 62 0.13 4 1 17 50 73 62 0.13 4 1 18 50 73 61 0.13 4 1 19 49 73 61 0.13 4 0 20 49 72 61 0.13 5 0 21 49 72 60 0.13 5 0 22 48 72 60 0.13 5 0 23 48 71 60 0.13 6 0 24 48 71 59 0.13 6 0 25 47 71 59 0.13 6 0 26 47 70 59 0.13 6 0 27 46 70 58 0.13 7 0 28 46 70 58 0.13 7 0 29 46 69 57 0.13 8 0 30 45 69 57 0.13 8 0 Month 51 74 62 3.98 116 30 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