August weather in Johnson, MN
The average temperature in Johnson in August is 70.1°F (59.8°F–80.4°F). Average precipitation: 3.23 inches.
August is a summer month in Johnson, and is warmer than the annual average of 44.7°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 13h 56m. For travel, August is a comfortable month to visit.
Avg High
80.4°F
Avg Low
59.8°F
Precipitation
3.23 in
Daylight
13h 56m
August records in Johnson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.9°F (1988) | 42.1°F (1927) | 1.60 in (2020) |
| August 2 | 102.0°F (1958) | 45.0°F (1923) | 1.80 in (1932) |
| August 3 | 100.0°F (1959) | 42.1°F (1971) | 2.56 in (2002) |
| August 4 | 105.1°F (1959) | 44.1°F (1929) | 1.38 in (1995) |
| August 5 | 97.0°F (1968) | 46.0°F (1971) | 2.50 in (1996) |
| August 6 | 97.0°F (1930) | 46.9°F (1971) | 2.38 in (2025) |
| August 7 | 100.0°F (1983) | 46.0°F (1921) | 2.65 in (1950) |
| August 8 | 100.0°F (1936) | 46.9°F (1922) | 1.44 in (1943) |
| August 9 | 100.0°F (1958) | 41.0°F (1939) | 1.20 in (1948) |
| August 10 | 100.9°F (1947) | 43.0°F (1930) | 2.00 in (2016) |
| August 11 | 102.0°F (1988) | 42.1°F (1931) | 1.40 in (1995) |
| August 12 | 99.0°F (1965) | 43.0°F (1946) | 1.25 in (2006) |
| August 13 | 100.9°F (1938) | 36.0°F (1964) | 3.57 in (1957) |
| August 14 | 100.9°F (1961) | 37.0°F (1968) | 2.41 in (2023) |
| August 15 | 100.9°F (1988) | 42.1°F (1929) | 1.69 in (1946) |
| August 16 | 100.0°F (1988) | 41.0°F (1924) | 1.93 in (1983) |
| August 17 | 100.0°F (1976) | 43.0°F (1943) | 1.57 in (2017) |
| August 18 | 102.9°F (1976) | 39.9°F (2002) | 5.78 in (1935) |
| August 19 | 102.0°F (1976) | 41.0°F (1967) | 1.44 in (1926) |
| August 20 | 98.1°F (1976) | 37.9°F (1934) | 3.30 in (1966) |
| August 21 | 99.0°F (1976) | 39.0°F (1925) | 2.34 in (2014) |
| August 22 | 98.1°F (1938) | 37.9°F (1923) | 1.72 in (2020) |
| August 23 | 97.0°F (1925) | 36.0°F (1927) | 2.52 in (1985) |
| August 24 | 102.9°F (1929) | 35.1°F (1934) | 1.19 in (2020) |
| August 25 | 96.1°F (1926) | 39.0°F (1934) | 1.95 in (1965) |
| August 26 | 99.0°F (1970) | 36.0°F (1934) | 1.11 in (2021) |
| August 27 | 97.0°F (1973) | 37.9°F (1986) | 2.72 in (1978) |
| August 28 | 97.0°F (1937) | 33.1°F (1934) | 2.39 in (1975) |
| August 29 | 100.0°F (1921) | 39.9°F (1917) | 2.57 in (1964) |
| August 30 | 95.0°F (1930) | 30.9°F (1931) | 2.40 in (1957) |
| August 31 | 95.0°F (1961) | 36.0°F (1987) | 1.69 in (2010) |