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December Normals for Gretna, SD

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 11 29 20 0.02 45 0 2 11 29 20 0.02 45 0 3 11 29 20 0.01 45 0 4 10 28 19 0.01 46 0 5 10 28 19 0.01 46 0 6 9 28 18 0.01 47 0 7 9 27 18 0.01 47 0 8 9 27 18 0.01 47 0 9 8 26 17 0.01 48 0 10 8 26 17 0.01 48 0 11 7 26 17 0.01 48 0 12 7 26 16 0.01 49 0 13 7 25 16 0.01 49 0 14 6 25 16 0.01 49 0 15 6 25 15 0.01 50 0 16 6 24 15 0.01 50 0 17 5 24 15 0.01 50 0 18 5 24 15 0.01 51 0 19 5 24 14 0.01 51 0 20 4 23 14 0.01 51 0 21 4 23 14 0.01 51 0 22 4 23 13 0.01 52 0 23 4 22 13 0.01 52 0 24 3 22 13 0.01 52 0 25 3 22 13 0.01 52 0 26 3 22 12 0.01 53 0 27 2 22 12 0.01 53 0 28 2 21 12 0.01 53 0 29 2 21 11 0.01 54 0 30 1 21 11 0.01 54 0 31 1 21 11 0.01 54 0 Month 6 25 15 0.33 1542 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