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Climatological Normals

September Normals for Harborside, ME

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 53 75 64 0.12 3 1 2 52 74 63 0.12 3 1 3 52 74 63 0.12 3 1 4 52 74 63 0.13 3 1 5 51 73 62 0.13 4 1 6 51 73 62 0.13 4 1 7 51 73 62 0.13 4 1 8 51 72 61 0.13 4 1 9 50 72 61 0.14 4 1 10 50 72 61 0.14 5 1 11 50 71 61 0.14 5 0 12 49 71 60 0.14 5 0 13 49 71 60 0.14 5 0 14 49 70 60 0.14 6 0 15 48 70 59 0.14 6 0 16 48 70 59 0.14 6 0 17 48 69 59 0.14 7 0 18 47 69 58 0.14 7 0 19 47 69 58 0.14 7 0 20 47 68 58 0.14 7 0 21 46 68 57 0.14 8 0 22 46 68 57 0.14 8 0 23 46 67 57 0.15 8 0 24 45 67 56 0.14 9 0 25 45 67 56 0.14 9 0 26 45 66 55 0.14 9 0 27 44 66 55 0.14 10 0 28 44 65 55 0.14 10 0 29 44 65 54 0.14 11 0 30 43 65 54 0.14 11 0 Month 48 70 59 4.1 191 10 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