August weather in Ismay, MT
The average temperature in Ismay in August is 69.8°F (54.0°F–85.5°F). Average precipitation: 1.35 inches.
August is a summer month in Ismay, and is warmer than the annual average of 44.2°F. Daily temperatures swing about 31.5°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 13h 60m. For travel, August is a comfortable month to visit.
Avg High
85.5°F
Avg Low
54.0°F
Precipitation
1.35 in
Daylight
13h 60m
August records in Ismay
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1964) | 37.0°F (1927) | 1.00 in (1981) |
| August 2 | 102.0°F (2024) | 42.1°F (1948) | 1.80 in (1984) |
| August 3 | 108.0°F (1934) | 35.1°F (1978) | 1.30 in (2023) |
| August 4 | 105.1°F (1964) | 35.1°F (1952) | 2.57 in (2023) |
| August 5 | 105.1°F (1941) | 39.0°F (1945) | 1.82 in (1976) |
| August 6 | 104.0°F (1949) | 39.9°F (1924) | 0.85 in (1948) |
| August 7 | 105.1°F (1949) | 36.0°F (1921) | 1.22 in (1941) |
| August 8 | 109.9°F (1949) | 37.9°F (1982) | 0.68 in (1945) |
| August 9 | 102.9°F (1958) | 33.1°F (1917) | 0.50 in (1996) |
| August 10 | 107.1°F (1935) | 33.1°F (1931) | 1.18 in (1947) |
| August 11 | 107.1°F (1928) | 30.9°F (1952) | 0.80 in (2019) |
| August 12 | 107.1°F (2018) | 37.9°F (1964) | 2.50 in (1999) |
| August 13 | 104.0°F (1937) | 37.9°F (1912) | 0.65 in (2012) |
| August 14 | 108.0°F (1955) | 32.0°F (1959) | 0.77 in (2020) |
| August 15 | 104.0°F (2003) | 39.0°F (1951) | 1.22 in (2014) |
| August 16 | 102.9°F (1973) | 37.9°F (1925) | 1.02 in (1980) |
| August 17 | 102.0°F (1920) | 41.0°F (1929) | 1.60 in (1972) |
| August 18 | 102.9°F (1964) | 39.0°F (2019) | 2.06 in (1912) |
| August 19 | 102.0°F (1955) | 30.0°F (1950) | 0.73 in (2021) |
| August 20 | 104.0°F (2025) | 32.0°F (1950) | 1.91 in (1998) |
| August 21 | 102.0°F (1995) | 37.9°F (1950) | 1.05 in (1969) |
| August 22 | 104.0°F (1971) | 39.0°F (1921) | 0.90 in (1973) |
| August 23 | 105.1°F (1937) | 30.9°F (1928) | 2.07 in (2014) |
| August 24 | 102.0°F (1996) | 32.0°F (1928) | 1.14 in (1943) |
| August 25 | 100.9°F (1920) | 30.9°F (1992) | 0.58 in (1987) |
| August 26 | 104.0°F (1926) | 34.0°F (1967) | 0.76 in (1987) |
| August 27 | 102.9°F (1991) | 34.0°F (1917) | 0.55 in (1977) |
| August 28 | 105.1°F (1924) | 27.0°F (1941) | 0.88 in (1920) |
| August 29 | 99.0°F (1929) | 33.1°F (1974) | 2.10 in (1964) |
| August 30 | 104.0°F (1948) | 32.0°F (1962) | 0.62 in (1958) |
| August 31 | 100.0°F (1919) | 28.9°F (1946) | 0.40 in (1977) |