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August Normals for Duluth, MN

< July September > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 56 77 66 0.13 2 3 2 56 76 66 0.13 2 3 3 55 76 66 0.13 2 3 4 55 76 66 0.13 2 3 5 55 76 66 0.13 2 3 6 55 76 66 0.13 2 2 7 55 76 66 0.13 2 2 8 55 76 65 0.13 2 2 9 55 76 65 0.13 2 2 10 55 75 65 0.13 2 2 11 55 75 65 0.13 2 2 12 55 75 65 0.13 2 2 13 54 75 65 0.13 3 2 14 54 75 64 0.13 3 2 15 54 74 64 0.14 3 2 16 54 74 64 0.14 3 2 17 54 74 64 0.14 3 2 18 54 74 64 0.14 3 2 19 53 74 63 0.14 4 2 20 53 73 63 0.14 4 2 21 53 73 63 0.14 4 2 22 53 73 63 0.14 4 2 23 52 73 62 0.14 4 2 24 52 72 62 0.14 5 2 25 52 72 62 0.14 5 1 26 52 72 62 0.14 5 1 27 51 71 61 0.14 5 1 28 51 71 61 0.14 6 1 29 51 71 61 0.14 6 1 30 50 70 60 0.15 6 1 31 50 70 60 0.15 6 1 Month 54 74 64 4.22 106 60 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