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December Normals for Simms, MT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 19 38 28 0.01 37 0 2 19 37 28 0 37 0 3 19 37 28 0 37 0 4 18 37 28 0 37 0 5 18 37 28 0 37 0 6 18 37 27 0 38 0 7 18 37 27 0 38 0 8 17 37 27 0 38 0 9 17 37 27 0 38 0 10 17 36 27 0 38 0 11 17 36 27 0.01 38 0 12 17 36 26 0.01 39 0 13 17 36 26 0.01 39 0 14 16 36 26 0.01 39 0 15 16 36 26 0.01 39 0 16 16 36 26 0.01 39 0 17 16 36 26 0.01 39 0 18 16 36 26 0.01 39 0 19 15 35 25 0.01 40 0 20 15 35 25 0.01 40 0 21 15 35 25 0.01 40 0 22 15 35 25 0.01 40 0 23 15 35 25 0.01 40 0 24 15 35 25 0.01 40 0 25 14 35 25 0.01 40 0 26 14 34 24 0.01 41 0 27 14 34 24 0.01 41 0 28 14 34 24 0.01 41 0 29 14 34 24 0.01 41 0 30 14 34 24 0.01 41 0 31 14 34 24 0.01 41 0 Month 16 36 26 0.22 1212 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