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December Normals for Longmont, CO

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 18 46 32 0.01 33 0 2 18 46 32 0.01 33 0 3 18 46 32 0.01 33 0 4 18 46 32 0.01 33 0 5 18 46 32 0.01 33 0 6 18 45 31 0.01 34 0 7 17 45 31 0.01 34 0 8 17 45 31 0.01 34 0 9 17 45 31 0.01 34 0 10 17 45 31 0.01 34 0 11 17 45 31 0.01 34 0 12 17 44 31 0.01 34 0 13 16 44 30 0.01 35 0 14 16 44 30 0.01 35 0 15 16 44 30 0.01 35 0 16 16 44 30 0.01 35 0 17 16 44 30 0.01 35 0 18 16 44 30 0.01 35 0 19 16 44 30 0 35 0 20 16 43 30 0 36 0 21 15 43 29 0 36 0 22 15 43 29 0 36 0 23 15 43 29 0.01 36 0 24 15 43 29 0.01 36 0 25 15 43 29 0.01 36 0 26 15 43 29 0.01 36 0 27 15 43 29 0.01 36 0 28 15 42 29 0.01 37 0 29 14 42 28 0.01 37 0 30 14 42 28 0.01 37 0 31 14 42 28 0.01 37 0 Month 16 44 30 0.27 1084 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