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September Normals for Discovery Bay, CA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 57 93 75 0 0 10 2 57 93 75 0 0 10 3 57 93 75 0.01 0 10 4 57 93 75 0.01 0 10 5 57 93 75 0.01 0 10 6 57 92 75 0.01 0 10 7 56 92 74 0.01 0 9 8 56 92 74 0.01 0 9 9 56 92 74 0.01 0 9 10 56 92 74 0.01 0 9 11 56 92 74 0.01 0 9 12 56 91 74 0.01 0 9 13 56 91 74 0.01 0 9 14 56 91 73 0.01 0 8 15 56 91 73 0.01 0 8 16 56 90 73 0.01 0 8 17 55 90 73 0.01 0 8 18 55 90 73 0.01 0 8 19 55 90 73 0.01 0 8 20 55 90 72 0.01 0 8 21 55 89 72 0.01 0 7 22 55 89 72 0.01 0 7 23 55 89 72 0.01 0 7 24 54 89 72 0.01 0 7 25 54 88 71 0.01 -- 7 26 54 88 71 0.01 -- 6 27 54 88 71 0.01 -- 6 28 54 87 71 0.01 -- 6 29 54 87 70 0.01 -- 6 30 54 87 70 0.02 -- 6 Month 56 90 73 0.29 6 244 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