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December Normals for Gilroy, CA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 39 60 50 0.09 15 0 2 39 60 50 0.09 15 0 3 39 60 50 0.09 15 0 4 39 60 49 0.09 16 0 5 39 60 49 0.09 16 0 6 39 59 49 0.09 16 0 7 39 59 49 0.09 16 0 8 38 59 49 0.09 16 0 9 38 59 49 0.09 16 0 10 38 59 48 0.09 17 0 11 38 59 48 0.09 17 0 12 38 58 48 0.1 17 0 13 38 58 48 0.1 17 0 14 38 58 48 0.1 17 0 15 38 58 48 0.1 17 0 16 38 58 48 0.1 17 0 17 38 58 48 0.1 17 0 18 38 58 48 0.1 17 0 19 38 58 48 0.11 17 0 20 38 58 48 0.11 17 0 21 38 58 48 0.11 17 0 22 37 58 48 0.11 17 0 23 37 57 47 0.11 18 0 24 37 57 47 0.12 18 0 25 37 57 47 0.12 18 0 26 38 57 47 0.12 18 0 27 38 57 47 0.12 18 0 28 38 57 47 0.12 18 0 29 38 57 47 0.13 18 0 30 38 57 48 0.13 17 0 31 38 57 48 0.13 17 0 Month 38 58 48 3.23 522 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