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September Normals for San Isabel, CO

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 41 74 57 0.06 8 -- 2 40 74 57 0.05 8 0 3 40 74 57 0.05 8 0 4 40 73 57 0.05 8 0 5 40 73 56 0.05 9 0 6 39 73 56 0.05 9 0 7 39 73 56 0.04 9 0 8 39 72 56 0.04 9 0 9 38 72 55 0.04 10 0 10 38 72 55 0.04 10 0 11 38 72 55 0.04 10 0 12 38 71 54 0.04 11 0 13 37 71 54 0.04 11 0 14 37 71 54 0.03 11 0 15 37 71 54 0.03 11 0 16 36 71 53 0.03 12 0 17 36 70 53 0.03 12 0 18 36 70 53 0.03 12 0 19 35 70 53 0.03 13 0 20 35 69 52 0.03 13 0 21 35 69 52 0.03 13 0 22 34 69 52 0.03 13 0 23 34 69 51 0.03 14 0 24 34 68 51 0.03 14 0 25 33 68 51 0.03 14 0 26 33 68 50 0.03 15 0 27 32 67 50 0.03 15 0 28 32 67 50 0.03 15 0 29 32 67 49 0.03 16 0 30 31 67 49 0.03 16 0 Month 36 71 53 1.1 349 1 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