August weather in Duluth, MN
The average temperature in Duluth in August is 67.0°F (59.5°F–74.4°F). Average precipitation: inches.
August is a summer month in Duluth, and is warmer than the annual average of 40.8°F. Daily temperatures swing about 14.9°F between overnight low and afternoon high. Daylight averages about 14h 1m. For travel, August is one of the best months of the year to visit.
Avg High
74.4°F
Avg Low
59.5°F
Precipitation
in
Daylight
14h 1m
August records in Duluth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 90.0°F (2000) | 36.0°F (2004) | 1.50 in (1981) |
| August 2 | 91.0°F (1987) | 45.0°F (2002) | 1.71 in (1983) |
| August 3 | 91.0°F (1997) | 48.9°F (2002) | 1.10 in (1962) |
| August 4 | 87.1°F (1961) | 42.1°F (2004) | 1.65 in (1976) |
| August 5 | 86.0°F (1963) | 50.0°F (1968) | 0.40 in (1973) |
| August 6 | 93.9°F (2001) | 50.0°F (1972) | 1.56 in (1973) |
| August 7 | 96.1°F (2001) | 46.9°F (1972) | 1.38 in (1986) |
| August 8 | 97.0°F (2001) | 50.0°F (1964) | 0.43 in (1960) |
| August 9 | 88.0°F (1971) | 50.0°F (1972) | 1.58 in (1960) |
| August 10 | 87.1°F (1998) | 48.0°F (2004) | 1.40 in (1983) |
| August 11 | 86.0°F (1965) | 43.0°F (2004) | 1.00 in (1976) |
| August 12 | 90.0°F (1965) | 43.0°F (2004) | 1.87 in (1985) |
| August 13 | 84.9°F (1991) | 39.0°F (2004) | 2.10 in (1988) |
| August 14 | 91.9°F (1991) | 39.0°F (2004) | 1.00 in (1978) |
| August 15 | 91.0°F (1991) | 43.0°F (2004) | 1.56 in (1973) |
| August 16 | 91.0°F (1991) | 30.9°F (2004) | 1.27 in (1972) |
| August 17 | 91.0°F (2003) | 34.0°F (2002) | 1.04 in (1971) |
| August 18 | 82.9°F (1979) | 34.0°F (2002) | 1.35 in (1990) |
| August 19 | 93.0°F (1976) | 34.0°F (2002) | 0.37 in (1968) |
| August 20 | 90.0°F (1976) | 36.0°F (2004) | 2.62 in (1972) |
| August 21 | 84.9°F (1976) | 34.0°F (2004) | 1.40 in (1964) |
| August 22 | 89.1°F (1976) | 32.0°F (2004) | 1.22 in (1986) |
| August 23 | 84.9°F (2003) | 41.0°F (2004) | 2.60 in (1978) |
| August 24 | 84.9°F (1998) | 39.9°F (2004) | 0.60 in (1964) |
| August 25 | 89.1°F (2003) | 37.0°F (2004) | 2.73 in (1990) |
| August 26 | 89.1°F (1983) | 35.1°F (2004) | 1.05 in (1990) |
| August 27 | 87.1°F (1984) | 39.0°F (2004) | 2.70 in (1978) |
| August 28 | 91.0°F (1984) | 39.0°F (2004) | 1.09 in (1964) |
| August 29 | 84.9°F (1998) | 35.1°F (2004) | 1.42 in (1969) |
| August 30 | 90.0°F (1961) | 44.1°F (2004) | 0.72 in (1969) |
| August 31 | 89.1°F (1961) | 39.9°F (2002) | 0.48 in (1973) |