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September Normals for Casper, WY

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 45 81 63 0.02 5 3 2 44 80 62 0.02 5 2 3 44 80 62 0.02 5 2 4 44 79 62 0.02 6 2 5 43 79 61 0.02 6 2 6 43 78 61 0.02 6 2 7 43 78 60 0.03 7 2 8 42 77 60 0.03 7 2 9 42 77 59 0.03 7 1 10 41 76 59 0.03 7 1 11 41 76 58 0.03 8 1 12 41 75 58 0.03 8 1 13 40 75 58 0.03 8 1 14 40 74 57 0.03 9 1 15 40 74 57 0.03 9 1 16 39 73 56 0.03 9 1 17 39 73 56 0.03 9 1 18 39 73 56 0.03 10 1 19 38 72 55 0.03 10 0 20 38 72 55 0.03 10 0 21 38 71 55 0.03 11 0 22 38 71 54 0.03 11 0 23 37 70 54 0.03 11 0 24 37 70 54 0.03 12 0 25 37 70 53 0.03 12 0 26 37 69 53 0.03 12 0 27 36 69 53 0.03 12 0 28 36 69 52 0.03 13 0 29 36 68 52 0.03 13 0 30 36 68 52 0.03 13 0 Month 40 74 57 0.84 271 27 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