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October Normals for Old Lyme, CT

< September November > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 48 67 58 0.15 8 -- 2 48 67 57 0.15 8 -- 3 47 66 57 0.15 9 -- 4 47 66 56 0.15 9 0 5 46 65 56 0.15 9 0 6 46 65 56 0.15 10 0 7 46 65 55 0.15 10 0 8 45 64 55 0.15 10 0 9 45 64 54 0.15 11 0 10 45 64 54 0.15 11 0 11 44 63 54 0.15 11 0 12 44 63 53 0.15 12 0 13 44 62 53 0.15 12 0 14 43 62 53 0.15 12 0 15 43 62 52 0.15 13 0 16 43 61 52 0.16 13 0 17 42 61 52 0.16 13 0 18 42 61 51 0.16 14 0 19 42 60 51 0.16 14 0 20 41 60 51 0.16 14 0 21 41 60 50 0.16 15 0 22 41 59 50 0.16 15 0 23 41 59 50 0.16 15 0 24 40 59 49 0.16 16 0 25 40 58 49 0.16 16 0 26 40 58 49 0.16 16 0 27 40 58 49 0.16 16 0 28 39 57 48 0.16 17 0 29 39 57 48 0.16 17 0 30 39 57 48 0.16 17 0 31 39 56 48 0.16 17 0 Month 43 62 52 4.81 400 3 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