August weather in St. Ignatius, MT
The average temperature in St. Ignatius in August is 68.3°F (50.7°F–85.8°F). Average precipitation: 1.17 inches.
August is a summer month in St. Ignatius, and is warmer than the annual average of 47.7°F. Daily temperatures swing about 35.1°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 14h 3m. For travel, August is a comfortable month to visit.
Avg High
85.8°F
Avg Low
50.7°F
Precipitation
1.17 in
Daylight
14h 3m
August records in St. Ignatius
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (2022) | 36.0°F (2022) | 0.64 in (1998) |
| August 2 | 100.0°F (2022) | 39.0°F (1897) | 1.64 in (1948) |
| August 3 | 100.9°F (1961) | 36.0°F (1930) | 0.68 in (1985) |
| August 4 | 102.0°F (1961) | 37.0°F (1980) | 0.70 in (1912) |
| August 5 | 100.9°F (1961) | 37.0°F (1980) | 0.65 in (1918) |
| August 6 | 102.0°F (1998) | 35.1°F (1909) | 0.71 in (1950) |
| August 7 | 97.0°F (1990) | 37.0°F (1923) | 0.32 in (1956) |
| August 8 | 98.1°F (2005) | 37.0°F (1909) | 0.57 in (1974) |
| August 9 | 98.1°F (1897) | 35.1°F (1914) | 0.80 in (1938) |
| August 10 | 99.0°F (1931) | 39.0°F (1911) | 0.56 in (2010) |
| August 11 | 102.9°F (1897) | 39.9°F (1924) | 0.50 in (1920) |
| August 12 | 97.0°F (1971) | 37.9°F (1912) | 0.82 in (2010) |
| August 13 | 97.0°F (1971) | 36.0°F (2009) | 1.06 in (2010) |
| August 14 | 96.1°F (1909) | 37.0°F (1949) | 1.25 in (1987) |
| August 15 | 98.1°F (1992) | 36.0°F (1913) | 1.72 in (1968) |
| August 16 | 96.1°F (1962) | 37.0°F (1928) | 0.51 in (2009) |
| August 17 | 97.0°F (1967) | 34.0°F (1925) | 0.84 in (1978) |
| August 18 | 100.0°F (2008) | 35.1°F (2009) | 0.90 in (1938) |
| August 19 | 100.0°F (2008) | 34.0°F (1913) | 1.20 in (2008) |
| August 20 | 97.0°F (1953) | 33.1°F (1929) | 2.09 in (1923) |
| August 21 | 95.0°F (1969) | 36.0°F (1930) | 1.27 in (2008) |
| August 22 | 99.0°F (2022) | 36.0°F (1921) | 1.65 in (1947) |
| August 23 | 93.9°F (1970) | 34.0°F (1992) | 1.27 in (2004) |
| August 24 | 97.0°F (1926) | 32.0°F (1910) | 0.70 in (1997) |
| August 25 | 97.0°F (1970) | 27.0°F (1910) | 0.74 in (1989) |
| August 26 | 98.1°F (2010) | 35.1°F (1910) | 1.48 in (1954) |
| August 27 | 99.0°F (2010) | 35.1°F (1976) | 0.61 in (1966) |
| August 28 | 95.0°F (1971) | 30.9°F (1909) | 0.46 in (1964) |
| August 29 | 95.0°F (1972) | 32.0°F (1980) | 0.75 in (1993) |
| August 30 | 95.0°F (1988) | 33.1°F (1980) | 0.59 in (1971) |
| August 31 | 93.9°F (1996) | 30.0°F (1924) | 0.93 in (1986) |