August weather in Fort Benton, MT
The average temperature in Fort Benton in August is 68.8°F (52.1°F–85.5°F). Average precipitation: 1.16 inches.
August is a summer month in Fort Benton, and is warmer than the annual average of 45.4°F. Daily temperatures swing about 33.4°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 14h 6m. For travel, August is a comfortable month to visit.
Avg High
85.5°F
Avg Low
52.1°F
Precipitation
1.16 in
Daylight
14h 6m
August records in Fort Benton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 105.1°F (1908) | 44.1°F (1968) | 1.53 in (2025) |
| August 2 | 102.9°F (2022) | 42.1°F (1963) | 0.79 in (2013) |
| August 3 | 102.9°F (1961) | 37.9°F (1978) | 0.75 in (1912) |
| August 4 | 104.0°F (1961) | 39.0°F (1978) | 0.54 in (2020) |
| August 5 | 109.0°F (1961) | 39.9°F (1940) | 1.00 in (1950) |
| August 6 | 105.1°F (1949) | 43.0°F (1940) | 0.31 in (2003) |
| August 7 | 102.0°F (1949) | 39.0°F (1969) | 0.99 in (1943) |
| August 8 | 102.0°F (1991) | 42.1°F (1977) | 1.17 in (1974) |
| August 9 | 106.0°F (1940) | 37.9°F (1946) | 0.90 in (1907) |
| August 10 | 106.0°F (1984) | 37.0°F (1977) | 1.47 in (1950) |
| August 11 | 104.0°F (2018) | 36.0°F (1977) | 1.19 in (1983) |
| August 12 | 109.0°F (1940) | 33.1°F (1987) | 0.77 in (1985) |
| August 13 | 100.0°F (1940) | 41.0°F (1968) | 0.63 in (1944) |
| August 14 | 102.0°F (2015) | 34.0°F (1895) | 0.55 in (1911) |
| August 15 | 104.0°F (2003) | 37.0°F (1943) | 1.90 in (1968) |
| August 16 | 102.0°F (2023) | 39.0°F (2012) | 1.52 in (1985) |
| August 17 | 100.0°F (2013) | 34.0°F (2002) | 0.35 in (2003) |
| August 18 | 104.0°F (2023) | 37.0°F (1946) | 0.96 in (2021) |
| August 19 | 99.0°F (1992) | 36.0°F (1956) | 0.85 in (1912) |
| August 20 | 100.0°F (1942) | 36.0°F (1956) | 0.88 in (1974) |
| August 21 | 98.1°F (1969) | 37.0°F (1945) | 0.58 in (1954) |
| August 22 | 99.0°F (1952) | 37.0°F (1992) | 0.74 in (1962) |
| August 23 | 100.0°F (1997) | 30.9°F (2015) | 1.18 in (2014) |
| August 24 | 104.0°F (1969) | 28.9°F (1910) | 1.93 in (2014) |
| August 25 | 100.0°F (1970) | 28.9°F (1992) | 1.35 in (1989) |
| August 26 | 98.1°F (1898) | 37.0°F (1960) | 0.30 in (1912) |
| August 27 | 102.0°F (2010) | 36.0°F (1909) | 0.60 in (1911) |
| August 28 | 97.0°F (2012) | 34.0°F (1977) | 0.52 in (2018) |
| August 29 | 100.0°F (2012) | 33.1°F (1965) | 1.22 in (1993) |
| August 30 | 102.9°F (1999) | 32.0°F (1959) | 0.80 in (1907) |
| August 31 | 102.9°F (1940) | 35.1°F (1969) | 1.26 in (1986) |