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September Normals for Jamestown, CO

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 35 71 53 0.06 12 0 2 34 71 53 0.06 12 0 3 34 71 53 0.06 12 0 4 34 71 52 0.06 13 0 5 34 70 52 0.06 13 0 6 33 70 52 0.06 13 0 7 33 70 52 0.06 13 0 8 33 70 51 0.06 14 0 9 33 70 51 0.06 14 0 10 33 69 51 0.06 14 0 11 32 69 51 0.06 14 0 12 32 69 50 0.06 15 0 13 32 68 50 0.06 15 0 14 32 68 50 0.06 15 0 15 31 68 50 0.06 15 0 16 31 68 49 0.06 16 0 17 31 67 49 0.06 16 0 18 31 67 49 0.06 16 0 19 30 67 49 0.05 16 0 20 30 67 48 0.05 17 0 21 30 66 48 0.05 17 0 22 29 66 48 0.05 17 0 23 29 66 47 0.05 18 0 24 29 65 47 0.05 18 0 25 29 65 47 0.05 18 0 26 28 65 47 0.05 18 0 27 28 65 46 0.05 19 0 28 28 64 46 0.05 19 0 29 28 64 46 0.05 19 0 30 27 64 45 0.05 20 0 Month 31 68 49 1.68 468 0 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