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December Normals for Troy, MT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 25 36 30 0.1 35 0 2 25 36 30 0.1 35 0 3 25 35 30 0.1 35 0 4 24 35 30 0.1 35 0 5 24 35 30 0.1 35 0 6 24 35 29 0.1 36 0 7 24 35 29 0.1 36 0 8 23 34 29 0.1 36 0 9 23 34 29 0.1 36 0 10 23 34 29 0.1 37 0 11 23 34 28 0.1 37 0 12 23 34 28 0.1 37 0 13 22 34 28 0.09 37 0 14 22 33 28 0.09 37 0 15 22 33 28 0.09 37 0 16 22 33 28 0.09 37 0 17 22 33 27 0.09 38 0 18 21 33 27 0.09 38 0 19 21 33 27 0.09 38 0 20 21 33 27 0.09 38 0 21 21 33 27 0.09 38 0 22 21 33 27 0.09 38 0 23 21 33 27 0.09 38 0 24 21 33 27 0.09 38 0 25 21 32 27 0.09 38 0 26 21 32 26 0.09 39 0 27 20 32 26 0.09 39 0 28 20 32 26 0.09 39 0 29 20 32 26 0.09 39 0 30 20 32 26 0.09 39 0 31 20 32 26 0.09 39 0 Month 22 34 28 2.91 1154 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