August weather in Missoula, MT
The average temperature in Missoula in August is 67.5°F (51.0°F–84.0°F). Average precipitation: 1.03 inches.
August is a summer month in Missoula, and is warmer than the annual average of 46.2°F. Daily temperatures swing about 33°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 1m. For travel, August is a comfortable month to visit.
Avg High
84.0°F
Avg Low
51.0°F
Precipitation
1.03 in
Daylight
14h 1m
August records in Missoula
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 97.0°F (2003) | 37.9°F (1987) | 0.39 in (2013) |
| August 2 | 97.0°F (1973) | 37.0°F (1987) | 0.97 in (1985) |
| August 3 | 96.1°F (1997) | 41.0°F (2002) | 0.57 in (1999) |
| August 4 | 93.9°F (1969) | 37.0°F (1980) | 0.46 in (2002) |
| August 5 | 99.0°F (1998) | 44.1°F (1996) | 0.07 in (1993) |
| August 6 | 98.1°F (1990) | 39.0°F (1969) | 0.92 in (2009) |
| August 7 | 98.1°F (1983) | 39.9°F (1969) | 2.13 in (2009) |
| August 8 | 97.0°F (1972) | 37.9°F (1995) | 0.26 in (2006) |
| August 9 | 99.0°F (1991) | 37.9°F (1995) | 0.10 in (2010) |
| August 10 | 97.0°F (2003) | 41.0°F (1975) | 0.57 in (1985) |
| August 11 | 95.0°F (1971) | 42.1°F (1987) | 0.84 in (1983) |
| August 12 | 95.0°F (1967) | 43.0°F (2006) | 0.58 in (1985) |
| August 13 | 97.0°F (1971) | 41.0°F (1985) | 0.37 in (1999) |
| August 14 | 97.0°F (1990) | 41.0°F (1995) | 0.54 in (1968) |
| August 15 | 97.0°F (1990) | 37.9°F (1974) | 1.35 in (1968) |
| August 16 | 93.9°F (1967) | 39.9°F (1974) | 0.24 in (1993) |
| August 17 | 98.1°F (2001) | 39.0°F (1969) | 0.57 in (1978) |
| August 18 | 99.0°F (2008) | 39.9°F (1970) | 0.37 in (1990) |
| August 19 | 96.1°F (1967) | 37.9°F (1980) | 0.46 in (1975) |
| August 20 | 95.0°F (1967) | 39.9°F (1984) | 0.80 in (1985) |
| August 21 | 98.1°F (1969) | 37.0°F (1988) | 0.62 in (2008) |
| August 22 | 99.0°F (1969) | 37.9°F (1992) | 0.45 in (1992) |
| August 23 | 100.9°F (1969) | 36.0°F (1992) | 0.77 in (2004) |
| August 24 | 102.0°F (1969) | 37.9°F (1971) | 0.53 in (1997) |
| August 25 | 98.1°F (1981) | 30.9°F (1992) | 0.33 in (1989) |
| August 26 | 98.1°F (1981) | 37.0°F (1992) | 0.66 in (2004) |
| August 27 | 97.0°F (1971) | 36.0°F (1976) | 0.40 in (1975) |
| August 28 | 95.0°F (1986) | 39.0°F (1977) | 0.62 in (1968) |
| August 29 | 96.1°F (1998) | 30.9°F (1980) | 0.34 in (1986) |
| August 30 | 93.9°F (1991) | 34.0°F (1980) | 0.79 in (1977) |
| August 31 | 93.9°F (1998) | 36.0°F (2005) | 0.73 in (1979) |