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September Normals for Custer, MT

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 50 82 66 0.04 4 4 2 49 81 65 0.05 4 4 3 49 81 65 0.05 4 4 4 48 80 64 0.05 4 4 5 48 80 64 0.05 5 4 6 48 79 63 0.05 5 3 7 47 79 63 0.05 5 3 8 47 78 63 0.05 5 3 9 46 78 62 0.05 5 3 10 46 77 62 0.05 6 2 11 46 77 61 0.05 6 2 12 45 76 61 0.05 6 2 13 45 76 60 0.05 6 2 14 45 76 60 0.05 7 2 15 44 75 60 0.05 7 2 16 44 75 59 0.05 7 1 17 43 74 59 0.05 7 1 18 43 74 59 0.05 8 1 19 43 73 58 0.05 8 1 20 42 73 58 0.05 8 1 21 42 73 57 0.05 8 1 22 42 72 57 0.05 9 1 23 42 72 57 0.05 9 1 24 41 72 56 0.05 9 1 25 41 71 56 0.05 9 1 26 41 71 56 0.05 10 0 27 40 71 55 0.05 10 0 28 40 70 55 0.05 10 0 29 40 70 55 0.04 10 0 30 39 70 55 0.04 11 0 Month 44 75 60 1.47 212 54 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