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September Normals for Boulder, WY

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 34 72 53 0.04 12 0 2 34 72 53 0.04 12 0 3 34 71 52 0.04 13 0 4 33 71 52 0.04 13 0 5 33 70 52 0.04 13 0 6 33 70 52 0.04 13 0 7 33 70 51 0.04 14 0 8 32 69 51 0.04 14 0 9 32 69 51 0.04 14 0 10 32 69 50 0.04 15 0 11 32 68 50 0.04 15 0 12 31 68 50 0.04 15 0 13 31 68 49 0.04 16 0 14 31 67 49 0.04 16 0 15 31 67 49 0.04 16 0 16 30 67 48 0.04 17 0 17 30 66 48 0.04 17 0 18 30 66 48 0.04 17 0 19 29 65 47 0.04 18 0 20 29 65 47 0.04 18 0 21 29 65 47 0.04 18 0 22 29 64 47 0.04 18 0 23 28 64 46 0.04 19 0 24 28 64 46 0.04 19 0 25 28 64 46 0.04 19 0 26 28 63 45 0.04 20 0 27 27 63 45 0.04 20 0 28 27 63 45 0.04 20 0 29 27 62 45 0.03 20 0 30 27 62 44 0.03 21 0 Month 30 67 49 1.18 492 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