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December Normals for Heyburn, ID

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 21 40 30 0.03 35 0 2 20 40 30 0.03 35 0 3 20 39 30 0.03 35 0 4 20 39 29 0.03 36 0 5 19 39 29 0.03 36 0 6 19 39 29 0.03 36 0 7 19 38 29 0.03 36 0 8 19 38 28 0.03 37 0 9 19 38 28 0.03 37 0 10 18 38 28 0.03 37 0 11 18 37 28 0.03 37 0 12 18 37 28 0.03 37 0 13 18 37 27 0.03 38 0 14 18 37 27 0.03 38 0 15 17 36 27 0.03 38 0 16 17 36 27 0.03 38 0 17 17 36 27 0.02 38 0 18 17 36 27 0.03 38 0 19 17 36 26 0.03 39 0 20 17 36 26 0.03 39 0 21 17 35 26 0.03 39 0 22 17 35 26 0.03 39 0 23 17 35 26 0.03 39 0 24 17 35 26 0.03 39 0 25 17 35 26 0.03 39 0 26 17 35 26 0.03 39 0 27 17 35 26 0.03 39 0 28 17 35 26 0.03 39 0 29 17 35 26 0.03 39 0 30 17 34 26 0.03 39 0 31 17 34 26 0.03 40 0 Month 18 37 27 0.92 1170 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