August weather in Chester, MT
The average temperature in Chester in August is 65.8°F (49.7°F–82.0°F). Average precipitation: 1.09 inches.
August is a summer month in Chester, and is warmer than the annual average of 41.4°F. Daily temperatures swing about 32.3°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 14h 9m. For travel, August is a comfortable month to visit.
Avg High
82.0°F
Avg Low
49.7°F
Precipitation
1.09 in
Daylight
14h 9m
August records in Chester
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (1914) | 37.9°F (1964) | 0.75 in (1912) |
| August 2 | 100.0°F (1914) | 39.9°F (1957) | 1.62 in (1970) |
| August 3 | 100.0°F (1914) | 37.9°F (1988) | 0.81 in (2021) |
| August 4 | 102.0°F (1961) | 34.0°F (1956) | 0.81 in (1912) |
| August 5 | 105.1°F (1961) | 36.0°F (1977) | 0.43 in (2024) |
| August 6 | 104.0°F (1949) | 37.9°F (1907) | 0.63 in (1957) |
| August 7 | 99.0°F (1983) | 39.0°F (1973) | 0.34 in (1975) |
| August 8 | 99.0°F (1991) | 33.1°F (1914) | 0.52 in (1916) |
| August 9 | 102.0°F (2018) | 37.0°F (1946) | 0.49 in (2016) |
| August 10 | 99.0°F (1991) | 30.9°F (1911) | 1.24 in (2016) |
| August 11 | 96.1°F (1967) | 32.0°F (1916) | 1.13 in (1974) |
| August 12 | 98.1°F (1906) | 30.9°F (1987) | 0.87 in (2010) |
| August 13 | 96.1°F (2022) | 36.0°F (2005) | 0.79 in (1999) |
| August 14 | 98.1°F (2015) | 33.1°F (1959) | 0.70 in (1913) |
| August 15 | 99.0°F (1990) | 32.0°F (1912) | 2.22 in (1968) |
| August 16 | 98.1°F (1900) | 34.0°F (2012) | 0.61 in (2021) |
| August 17 | 95.0°F (1958) | 28.0°F (1946) | 0.44 in (1947) |
| August 18 | 98.1°F (1964) | 34.0°F (1912) | 0.83 in (1972) |
| August 19 | 97.0°F (1955) | 30.9°F (1956) | 0.98 in (2016) |
| August 20 | 95.0°F (1967) | 30.0°F (1956) | 0.56 in (1975) |
| August 21 | 96.1°F (1969) | 32.0°F (1904) | 1.12 in (1979) |
| August 22 | 95.0°F (1952) | 33.1°F (1992) | 0.95 in (1993) |
| August 23 | 96.1°F (1946) | 32.0°F (1992) | 1.10 in (2004) |
| August 24 | 102.0°F (1969) | 28.0°F (1914) | 0.87 in (1975) |
| August 25 | 98.1°F (1969) | 28.0°F (1914) | 0.82 in (1989) |
| August 26 | 96.1°F (1970) | 34.0°F (1914) | 0.63 in (1954) |
| August 27 | 98.1°F (2010) | 30.9°F (1911) | 0.45 in (2008) |
| August 28 | 93.9°F (1971) | 28.0°F (1918) | 0.72 in (1907) |
| August 29 | 95.0°F (1943) | 30.0°F (1965) | 1.07 in (2010) |
| August 30 | 97.0°F (1999) | 30.9°F (1959) | 1.29 in (1951) |
| August 31 | 99.0°F (1991) | 33.1°F (1912) | 0.85 in (1957) |