August weather in St. Johns, MI
The average temperature in St. Johns in August is 71.0°F (60.7°F–81.3°F). Average precipitation: 3.46 inches.
August is a summer month in St. Johns, and is warmer than the annual average of 49.1°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 46m. For travel, August is a comfortable month to visit.
Avg High
81.3°F
Avg Low
60.7°F
Precipitation
3.46 in
Daylight
13h 46m
August records in St. Johns
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (1955) | 41.0°F (1947) | 1.85 in (1896) |
| August 2 | 100.0°F (1955) | 46.0°F (1976) | 2.75 in (1972) |
| August 3 | 100.0°F (1988) | 43.0°F (1965) | 1.41 in (2020) |
| August 4 | 97.0°F (1944) | 42.1°F (1951) | 2.10 in (2022) |
| August 5 | 100.9°F (1947) | 43.0°F (1972) | 1.50 in (1896) |
| August 6 | 102.0°F (1947) | 43.0°F (1948) | 1.25 in (1955) |
| August 7 | 98.1°F (1947) | 45.0°F (1989) | 1.14 in (1955) |
| August 8 | 96.1°F (1900) | 32.0°F (1907) | 1.65 in (1996) |
| August 9 | 97.0°F (2001) | 41.0°F (1964) | 2.80 in (2009) |
| August 10 | 98.1°F (1944) | 41.0°F (1964) | 1.71 in (2012) |
| August 11 | 98.1°F (1944) | 42.1°F (1983) | 2.45 in (1896) |
| August 12 | 95.0°F (1947) | 39.9°F (1950) | 2.78 in (2021) |
| August 13 | 97.0°F (1947) | 43.0°F (1954) | 1.94 in (1974) |
| August 14 | 100.9°F (1944) | 44.1°F (1964) | 1.95 in (1960) |
| August 15 | 97.0°F (1944) | 37.9°F (1964) | 2.02 in (2023) |
| August 16 | 95.0°F (1895) | 39.9°F (1979) | 3.78 in (1952) |
| August 17 | 95.0°F (1947) | 41.0°F (1954) | 2.40 in (1968) |
| August 18 | 100.9°F (1947) | 39.9°F (1958) | 2.30 in (1988) |
| August 19 | 99.0°F (1947) | 43.0°F (1958) | 1.03 in (1939) |
| August 20 | 97.0°F (1983) | 42.1°F (1895) | 1.80 in (1993) |
| August 21 | 96.1°F (1955) | 39.9°F (1950) | 4.63 in (1975) |
| August 22 | 96.1°F (2003) | 39.9°F (1907) | 1.29 in (1983) |
| August 23 | 96.1°F (1898) | 41.0°F (1951) | 1.35 in (2007) |
| August 24 | 97.0°F (1947) | 16.0°F (1895) | 1.85 in (1985) |
| August 25 | 93.9°F (1948) | 39.0°F (1942) | 1.90 in (2023) |
| August 26 | 95.0°F (1948) | 41.0°F (1963) | 1.17 in (1986) |
| August 27 | 96.1°F (1948) | 37.9°F (1986) | 1.25 in (1943) |
| August 28 | 95.0°F (1953) | 39.0°F (1982) | 1.63 in (1992) |
| August 29 | 97.0°F (1953) | 39.9°F (1965) | 1.86 in (1977) |
| August 30 | 97.0°F (1953) | 37.9°F (1982) | 1.63 in (1955) |
| August 31 | 98.1°F (1953) | 44.1°F (1967) | 1.58 in (1951) |