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December Normals for Big Sky, MT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 23 38 30 0.02 35 0 2 23 37 30 0.02 35 0 3 23 37 30 0.02 35 0 4 23 37 30 0.02 35 0 5 22 37 30 0.02 35 0 6 22 37 29 0.02 36 0 7 22 37 29 0.02 36 0 8 22 36 29 0.02 36 0 9 21 36 29 0.02 36 0 10 21 36 29 0.01 36 0 11 21 36 29 0.01 37 0 12 21 36 28 0.01 37 0 13 21 36 28 0.01 37 0 14 21 36 28 0.01 37 0 15 21 35 28 0.02 37 0 16 20 35 28 0.02 37 0 17 20 35 28 0.02 37 0 18 20 35 28 0.02 37 0 19 20 35 27 0.02 38 0 20 20 35 27 0.02 38 0 21 20 35 27 0.02 38 0 22 20 35 27 0.02 38 0 23 20 35 27 0.02 38 0 24 19 35 27 0.02 38 0 25 19 35 27 0.02 38 0 26 19 35 27 0.02 38 0 27 19 35 27 0.02 38 0 28 19 35 27 0.02 38 0 29 19 34 27 0.02 38 0 30 19 34 27 0.02 38 0 31 19 34 27 0.02 38 0 Month 21 36 28 0.57 1145 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