August weather in Winona, MN
The average temperature in Winona in August is 72.6°F (63.1°F–82.1°F). Average precipitation: inches.
August is a summer month in Winona, and is warmer than the annual average of 48.8°F. Daily temperatures swing about 19°F between overnight low and afternoon high. Daylight averages about 13h 50m. For travel, August is a comfortable month to visit.
Avg High
82.1°F
Avg Low
63.1°F
Precipitation
in
Daylight
13h 50m
August records in Winona
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1988) | 46.9°F (1920) | 1.26 in (1945) |
| August 2 | 99.0°F (1988) | 46.9°F (1920) | 2.94 in (1928) |
| August 3 | 100.9°F (1964) | 46.0°F (1978) | 2.86 in (1937) |
| August 4 | 99.0°F (1947) | 43.0°F (1978) | 1.67 in (1916) |
| August 5 | 98.1°F (1999) | 45.0°F (1978) | 2.50 in (1998) |
| August 6 | 99.0°F (1985) | 48.0°F (1957) | 1.93 in (1935) |
| August 7 | 99.0°F (2001) | 46.9°F (1903) | 1.99 in (1973) |
| August 8 | 99.0°F (1894) | 42.1°F (1904) | 1.96 in (2009) |
| August 9 | 98.1°F (1936) | 42.1°F (1972) | 3.40 in (1998) |
| August 10 | 93.9°F (1920) | 44.1°F (1972) | 3.00 in (1994) |
| August 11 | 96.1°F (1936) | 46.0°F (1986) | 1.67 in (2007) |
| August 12 | 99.0°F (1936) | 45.0°F (1902) | 1.09 in (1934) |
| August 13 | 99.0°F (1936) | 46.0°F (1924) | 0.86 in (1974) |
| August 14 | 95.0°F (1922) | 41.0°F (1964) | 3.42 in (1909) |
| August 15 | 100.9°F (1936) | 42.1°F (1964) | 2.21 in (1981) |
| August 16 | 100.9°F (1988) | 43.0°F (1976) | 1.83 in (1932) |
| August 17 | 100.9°F (1988) | 45.0°F (1976) | 1.60 in (1998) |
| August 18 | 98.1°F (1936) | 43.0°F (1915) | 1.57 in (1990) |
| August 19 | 97.0°F (1916) | 46.0°F (1977) | 4.95 in (2007) |
| August 20 | 97.0°F (1955) | 42.1°F (1950) | 4.00 in (2007) |
| August 21 | 96.1°F (1916) | 41.0°F (2004) | 1.56 in (1905) |
| August 22 | 100.0°F (1955) | 41.0°F (1923) | 1.50 in (1974) |
| August 23 | 102.0°F (1948) | 43.0°F (1923) | 2.75 in (1973) |
| August 24 | 102.9°F (1948) | 42.1°F (1934) | 1.31 in (1962) |
| August 25 | 100.0°F (1949) | 39.9°F (1920) | 2.24 in (2001) |
| August 26 | 98.1°F (1949) | 39.9°F (1958) | 1.38 in (1942) |
| August 27 | 97.0°F (1953) | 41.0°F (1916) | 1.62 in (1907) |
| August 28 | 96.1°F (1926) | 42.1°F (1917) | 2.28 in (1936) |
| August 29 | 96.1°F (1921) | 39.9°F (1911) | 2.09 in (1921) |
| August 30 | 95.0°F (1953) | 33.1°F (1915) | 2.17 in (1948) |
| August 31 | 97.0°F (1937) | 42.1°F (1967) | 2.72 in (1962) |