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December Normals for Mystic, SD

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 9 35 22 0.02 43 0 2 8 34 21 0.02 44 0 3 8 34 21 0.02 44 0 4 8 34 21 0.02 44 0 5 8 34 21 0.02 44 0 6 7 34 21 0.02 44 0 7 7 34 20 0.02 45 0 8 7 34 20 0.02 45 0 9 7 33 20 0.02 45 0 10 7 33 20 0.02 45 0 11 6 33 20 0.02 45 0 12 6 33 20 0.02 45 0 13 6 33 20 0.02 45 0 14 6 33 19 0.02 46 0 15 6 33 19 0.02 46 0 16 6 33 19 0.02 46 0 17 5 32 19 0.02 46 0 18 5 32 19 0.02 46 0 19 5 32 19 0.02 46 0 20 5 32 19 0.02 46 0 21 5 32 18 0.02 47 0 22 5 32 18 0.02 47 0 23 5 32 18 0.02 47 0 24 5 32 18 0.02 47 0 25 4 32 18 0.02 47 0 26 4 32 18 0.02 47 0 27 4 32 18 0.01 47 0 28 4 32 18 0.01 47 0 29 4 31 18 0.01 47 0 30 4 31 18 0.01 47 0 31 4 31 18 0.01 48 0 Month 6 33 19 0.57 1418 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