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December Normals for Diablo, WA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 32 40 36 0.35 29 0 2 31 39 35 0.35 30 0 3 31 39 35 0.34 30 0 4 31 39 35 0.34 30 0 5 31 39 35 0.34 30 0 6 31 39 35 0.33 30 0 7 31 39 35 0.33 30 0 8 30 39 35 0.33 31 0 9 30 39 34 0.32 31 0 10 30 38 34 0.32 31 0 11 30 38 34 0.32 31 0 12 30 38 34 0.31 31 0 13 30 38 34 0.31 31 0 14 30 38 34 0.31 31 0 15 30 38 34 0.31 31 0 16 29 38 34 0.31 31 0 17 29 38 33 0.3 32 0 18 29 38 33 0.3 32 0 19 29 38 33 0.3 32 0 20 29 38 33 0.3 32 0 21 29 38 33 0.3 32 0 22 29 37 33 0.3 32 0 23 29 37 33 0.3 32 0 24 29 37 33 0.29 32 0 25 29 37 33 0.29 32 0 26 29 37 33 0.29 32 0 27 29 37 33 0.29 32 0 28 28 37 33 0.29 32 0 29 28 37 33 0.29 32 0 30 28 37 33 0.29 32 0 31 28 37 33 0.29 32 0 Month 30 38 34 9.64 968 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