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December Normals for Downey, CA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 49 70 60 0.05 5 -- 2 49 70 60 0.05 5 -- 3 49 70 60 0.05 5 -- 4 49 70 60 0.05 6 -- 5 49 70 59 0.05 6 -- 6 49 70 59 0.05 6 -- 7 49 70 59 0.05 6 -- 8 49 69 59 0.05 6 -- 9 49 69 59 0.05 6 -- 10 48 69 59 0.05 6 -- 11 48 69 59 0.05 6 -- 12 48 69 59 0.06 6 -- 13 48 69 58 0.06 6 -- 14 48 69 58 0.06 7 0 15 48 69 58 0.06 7 0 16 48 68 58 0.06 7 0 17 48 68 58 0.06 7 0 18 48 68 58 0.06 7 0 19 48 68 58 0.06 7 0 20 48 68 58 0.06 7 0 21 48 68 58 0.07 7 0 22 48 68 58 0.07 7 0 23 48 68 58 0.07 7 0 24 48 68 58 0.07 7 0 25 48 68 58 0.07 7 0 26 48 68 58 0.07 7 0 27 48 68 58 0.08 7 0 28 48 68 58 0.08 7 0 29 48 68 58 0.08 7 0 30 48 68 58 0.08 7 0 31 48 68 58 0.08 7 0 Month 48 69 59 1.91 201 13 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