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September Normals for Chalfont, PA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 58 79 69 0.15 0 4 2 58 79 69 0.15 0 4 3 58 79 68 0.15 0 4 4 58 79 68 0.15 0 4 5 57 78 68 0.16 1 3 6 57 78 68 0.16 1 3 7 57 78 67 0.16 1 3 8 56 78 67 0.16 1 3 9 56 77 67 0.16 1 3 10 56 77 67 0.16 1 2 11 56 77 66 0.16 1 2 12 55 77 66 0.16 1 2 13 55 76 66 0.16 1 2 14 55 76 65 0.16 2 2 15 54 76 65 0.16 2 2 16 54 75 65 0.16 2 2 17 53 75 64 0.16 2 1 18 53 75 64 0.16 3 1 19 53 75 64 0.16 3 1 20 52 74 63 0.16 3 1 21 52 74 63 0.16 3 1 22 52 74 63 0.16 4 1 23 51 73 62 0.16 4 1 24 51 73 62 0.16 4 1 25 50 73 61 0.16 4 1 26 50 72 61 0.15 5 1 27 49 72 61 0.15 5 1 28 49 71 60 0.15 5 1 29 48 71 60 0.15 6 1 30 48 71 59 0.14 6 1 Month 54 75 65 4.7 72 59 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