August weather in Chinook, MT
The average temperature in Chinook in August is 67.5°F (51.7°F–83.3°F). Average precipitation: 1.14 inches.
August is a summer month in Chinook, and is warmer than the annual average of 42.4°F. Daily temperatures swing about 31.6°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 14h 9m. For travel, August is a comfortable month to visit.
Avg High
83.3°F
Avg Low
51.7°F
Precipitation
1.14 in
Daylight
14h 9m
August records in Chinook
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 109.0°F (1908) | 39.0°F (1945) | 0.46 in (1899) |
| August 2 | 102.0°F (1914) | 39.0°F (1923) | 0.71 in (1984) |
| August 3 | 105.1°F (1934) | 39.0°F (1988) | 0.74 in (1936) |
| August 4 | 104.0°F (1961) | 39.9°F (1910) | 1.20 in (1980) |
| August 5 | 109.0°F (1961) | 35.1°F (1977) | 0.35 in (1954) |
| August 6 | 106.0°F (1983) | 37.9°F (1923) | 1.25 in (1991) |
| August 7 | 100.9°F (1930) | 39.0°F (1921) | 0.27 in (2004) |
| August 8 | 102.0°F (2001) | 39.0°F (1980) | 2.50 in (1974) |
| August 9 | 100.0°F (1991) | 34.0°F (1985) | 1.89 in (2002) |
| August 10 | 100.9°F (1897) | 35.1°F (1977) | 0.55 in (2016) |
| August 11 | 104.0°F (1897) | 36.0°F (1916) | 0.64 in (1918) |
| August 12 | 104.0°F (2018) | 34.0°F (1916) | 0.81 in (1982) |
| August 13 | 100.9°F (1935) | 34.0°F (1985) | 1.00 in (2013) |
| August 14 | 102.9°F (1933) | 37.9°F (1959) | 0.75 in (1944) |
| August 15 | 102.9°F (1961) | 36.0°F (1944) | 2.10 in (1968) |
| August 16 | 102.9°F (2003) | 35.1°F (1943) | 0.88 in (1985) |
| August 17 | 100.9°F (1934) | 33.1°F (1946) | 1.01 in (1918) |
| August 18 | 106.0°F (1986) | 34.0°F (1907) | 0.67 in (1936) |
| August 19 | 99.0°F (2001) | 33.1°F (1950) | 0.62 in (1912) |
| August 20 | 99.0°F (1897) | 33.1°F (1986) | 1.61 in (1975) |
| August 21 | 100.9°F (1897) | 37.0°F (1904) | 3.29 in (1933) |
| August 22 | 99.0°F (1897) | 32.0°F (1928) | 0.73 in (1906) |
| August 23 | 99.0°F (1961) | 36.0°F (1911) | 1.20 in (2014) |
| August 24 | 102.0°F (1969) | 36.0°F (1988) | 2.00 in (2014) |
| August 25 | 100.9°F (1920) | 30.0°F (1910) | 1.50 in (2014) |
| August 26 | 99.0°F (1937) | 32.0°F (1900) | 0.79 in (1963) |
| August 27 | 100.9°F (2010) | 35.1°F (1917) | 0.74 in (1920) |
| August 28 | 100.9°F (1939) | 30.0°F (1911) | 0.99 in (1904) |
| August 29 | 99.0°F (1929) | 32.0°F (1946) | 0.55 in (1953) |
| August 30 | 100.9°F (1929) | 33.1°F (1959) | 0.82 in (1907) |
| August 31 | 102.0°F (1991) | 30.0°F (1988) | 0.90 in (2010) |