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December Normals for Rocky Boy, MT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 13 33 23 0.01 42 0 2 12 33 23 0.01 42 0 3 12 33 22 0.01 43 0 4 12 33 22 0.01 43 0 5 11 32 22 0.01 43 0 6 11 32 22 0.01 43 0 7 11 32 21 0.01 44 0 8 10 32 21 0.01 44 0 9 10 31 21 0.01 44 0 10 10 31 20 0.01 45 0 11 10 31 20 0.01 45 0 12 9 30 20 0.02 45 0 13 9 30 20 0.02 45 0 14 9 30 19 0.02 46 0 15 8 30 19 0.02 46 0 16 8 29 19 0.02 46 0 17 8 29 18 0.02 47 0 18 8 29 18 0.02 47 0 19 7 29 18 0.02 47 0 20 7 28 18 0.02 47 0 21 7 28 17 0.02 48 0 22 6 28 17 0.02 48 0 23 6 28 17 0.02 48 0 24 6 27 17 0.02 48 0 25 6 27 16 0.02 49 0 26 5 27 16 0.02 49 0 27 5 26 16 0.02 49 0 28 5 26 16 0.02 49 0 29 5 26 15 0.02 50 0 30 4 26 15 0.02 50 0 31 4 25 15 0.02 50 0 Month 8 29 19 0.51 1432 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