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December Normals for Helmville, MT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 10 32 21 0.04 44 0 2 9 32 21 0.04 44 0 3 9 32 20 0.04 45 0 4 9 31 20 0.04 45 0 5 8 31 20 0.04 45 0 6 8 31 20 0.04 45 0 7 8 31 19 0.03 46 0 8 8 30 19 0.03 46 0 9 7 30 19 0.03 46 0 10 7 30 19 0.03 46 0 11 7 30 18 0.03 47 0 12 6 30 18 0.03 47 0 13 6 29 18 0.03 47 0 14 6 29 18 0.03 47 0 15 6 29 17 0.03 48 0 16 6 29 17 0.03 48 0 17 5 29 17 0.03 48 0 18 5 29 17 0.03 48 0 19 5 28 17 0.03 48 0 20 5 28 17 0.03 48 0 21 5 28 17 0.03 49 0 22 5 28 16 0.03 49 0 23 4 28 16 0.03 49 0 24 4 28 16 0.03 49 0 25 4 28 16 0.03 49 0 26 4 28 16 0.03 49 0 27 4 28 16 0.03 49 0 28 4 28 16 0.03 49 0 29 4 28 16 0.03 49 0 30 4 28 16 0.03 49 0 31 4 28 16 0.03 49 0 Month 6 29 18 0.99 1467 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