August weather in Ontonagon, MI
The average temperature in Ontonagon in August is 66.1°F (53.9°F–78.4°F). Average precipitation: 2.99 inches.
August is a summer month in Ontonagon, and is warmer than the annual average of 43.3°F. Daily temperatures swing about 24.5°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 14h 1m. For travel, August is one of the best months of the year to visit.
Avg High
78.4°F
Avg Low
53.9°F
Precipitation
2.99 in
Daylight
14h 1m
August records in Ontonagon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 96.1°F (2006) | 42.1°F (1985) | 1.33 in (2001) |
| August 2 | 93.9°F (2005) | 48.0°F (2008) | 0.52 in (2007) |
| August 3 | 91.0°F (2005) | 41.0°F (1992) | 0.74 in (1981) |
| August 4 | 91.0°F (1989) | 39.0°F (1992) | 1.28 in (1988) |
| August 5 | 95.0°F (2001) | 39.0°F (1987) | 0.87 in (1986) |
| August 6 | 91.0°F (2001) | 37.9°F (1990) | 0.61 in (2000) |
| August 7 | 99.0°F (1983) | 39.9°F (1989) | 1.43 in (2011) |
| August 8 | 97.0°F (2005) | 45.0°F (1999) | 0.85 in (1986) |
| August 9 | 90.0°F (1992) | 44.1°F (1983) | 1.95 in (2009) |
| August 10 | 91.0°F (1995) | 39.9°F (2008) | 1.23 in (1983) |
| August 11 | 93.0°F (1988) | 37.0°F (1979) | 0.66 in (2014) |
| August 12 | 87.1°F (1978) | 36.0°F (1992) | 0.41 in (1999) |
| August 13 | 91.0°F (1978) | 35.1°F (1992) | 1.41 in (1999) |
| August 14 | 93.0°F (1978) | 35.1°F (1992) | 0.76 in (1988) |
| August 15 | 93.0°F (2003) | 41.0°F (2008) | 1.00 in (1997) |
| August 16 | 93.0°F (1988) | 34.0°F (1979) | 0.93 in (1978) |
| August 17 | 90.0°F (2008) | 39.9°F (1981) | 2.12 in (1988) |
| August 18 | 91.9°F (2003) | 37.0°F (1997) | 0.75 in (2014) |
| August 19 | 89.1°F (2003) | 37.9°F (2008) | 0.58 in (2006) |
| August 20 | 90.0°F (2013) | 39.9°F (1988) | 1.23 in (2003) |
| August 21 | 86.0°F (2013) | 37.0°F (1993) | 2.95 in (1980) |
| August 22 | 87.1°F (2008) | 44.1°F (2011) | 1.13 in (1982) |
| August 23 | 89.1°F (2010) | 41.0°F (2009) | 3.90 in (1978) |
| August 24 | 88.0°F (2003) | 37.9°F (1987) | 0.73 in (1993) |
| August 25 | 95.0°F (2013) | 39.9°F (2008) | 2.12 in (1995) |
| August 26 | 93.9°F (1991) | 39.9°F (1985) | 0.53 in (2013) |
| August 27 | 95.0°F (1991) | 37.9°F (1996) | 0.67 in (1984) |
| August 28 | 93.9°F (1991) | 34.0°F (1982) | 1.73 in (2007) |
| August 29 | 95.0°F (1991) | 37.9°F (1982) | 1.15 in (2009) |
| August 30 | 93.9°F (2010) | 35.1°F (2009) | 0.98 in (1997) |
| August 31 | 91.9°F (2008) | 39.0°F (2009) | 0.83 in (1989) |