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December Normals for Tiffin, IA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 21 37 29 0.06 36 0 2 21 37 29 0.06 36 0 3 20 37 28 0.06 37 0 4 20 36 28 0.06 37 0 5 19 36 28 0.06 38 0 6 19 35 27 0.06 38 0 7 18 35 27 0.06 38 0 8 18 34 26 0.05 39 0 9 18 34 26 0.05 39 0 10 17 34 25 0.05 40 0 11 17 33 25 0.05 40 0 12 16 33 25 0.05 40 0 13 16 32 24 0.05 41 0 14 16 32 24 0.05 41 0 15 15 32 24 0.05 41 0 16 15 31 23 0.05 42 0 17 15 31 23 0.05 42 0 18 14 31 23 0.04 42 0 19 14 30 22 0.04 43 0 20 14 30 22 0.04 43 0 21 13 30 22 0.04 43 0 22 13 30 21 0.04 44 0 23 13 29 21 0.04 44 0 24 12 29 21 0.04 44 0 25 12 29 21 0.04 45 0 26 12 29 20 0.04 45 0 27 12 28 20 0.04 45 0 28 11 28 20 0.04 45 0 29 11 28 20 0.04 45 0 30 11 28 19 0.04 46 0 31 11 28 19 0.04 46 0 Month 15 32 24 1.48 1285 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