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September Normals for Grass Creek, WY

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 39 72 56 0.04 10 -- 2 39 72 55 0.04 10 -- 3 39 71 55 0.05 10 -- 4 38 71 55 0.05 11 0 5 38 71 54 0.05 11 0 6 37 70 54 0.05 11 0 7 37 70 53 0.05 12 0 8 37 69 53 0.05 12 0 9 36 69 53 0.05 13 0 10 36 69 52 0.05 13 0 11 36 68 52 0.05 13 0 12 35 68 51 0.05 14 0 13 35 67 51 0.05 14 0 14 35 67 51 0.05 14 0 15 34 67 50 0.05 15 0 16 34 66 50 0.05 15 0 17 34 66 50 0.05 15 0 18 33 66 50 0.05 15 0 19 33 65 49 0.05 16 0 20 33 65 49 0.05 16 0 21 33 65 49 0.05 16 0 22 32 64 48 0.05 17 0 23 32 64 48 0.05 17 0 24 32 64 48 0.05 17 0 25 31 64 48 0.05 17 0 26 31 63 47 0.05 18 0 27 31 63 47 0.05 18 0 28 31 63 47 0.05 18 0 29 31 63 47 0.04 18 0 30 30 62 46 0.04 19 0 Month 34 67 51 1.46 435 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