August weather in Grass Range, MT
The average temperature in Grass Range in August is 67.3°F (51.9°F–82.7°F). Average precipitation: 1.67 inches.
August is a summer month in Grass Range, and is warmer than the annual average of 45.5°F. Daily temperatures swing about 30.8°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 2m. For travel, August is a comfortable month to visit.
Avg High
82.7°F
Avg Low
51.9°F
Precipitation
1.67 in
Daylight
14h 2m
August records in Grass Range
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 97.0°F (1936) | 41.0°F (1950) | 0.34 in (1944) |
| August 2 | 97.0°F (1945) | 39.0°F (1937) | 1.55 in (1972) |
| August 3 | 102.9°F (1961) | 37.9°F (1974) | 1.05 in (1985) |
| August 4 | 104.0°F (1961) | 41.0°F (1955) | 0.89 in (1954) |
| August 5 | 105.1°F (1961) | 37.9°F (1980) | 0.84 in (2014) |
| August 6 | 105.1°F (1949) | 37.0°F (2006) | 1.15 in (2022) |
| August 7 | 102.0°F (1983) | 39.9°F (1957) | 0.82 in (2009) |
| August 8 | 99.0°F (1958) | 37.9°F (1939) | 1.15 in (2002) |
| August 9 | 100.0°F (1936) | 39.9°F (1960) | 0.62 in (1982) |
| August 10 | 106.0°F (1935) | 39.0°F (1960) | 0.80 in (1950) |
| August 11 | 100.9°F (1983) | 32.0°F (1914) | 0.93 in (1985) |
| August 12 | 102.0°F (1940) | 36.0°F (1987) | 0.90 in (1951) |
| August 13 | 102.0°F (1935) | 37.9°F (2005) | 0.52 in (1974) |
| August 14 | 100.9°F (1971) | 33.1°F (1959) | 0.75 in (1974) |
| August 15 | 100.0°F (1990) | 36.0°F (1944) | 0.97 in (1972) |
| August 16 | 100.0°F (1973) | 34.0°F (1938) | 0.88 in (1985) |
| August 17 | 98.1°F (2023) | 35.1°F (2002) | 0.61 in (1990) |
| August 18 | 100.9°F (1948) | 35.1°F (1978) | 0.75 in (2021) |
| August 19 | 97.0°F (1942) | 36.0°F (1950) | 0.60 in (1964) |
| August 20 | 98.1°F (1971) | 34.0°F (1956) | 1.37 in (1964) |
| August 21 | 99.0°F (1969) | 30.0°F (1945) | 0.35 in (1947) |
| August 22 | 104.0°F (1976) | 37.0°F (1992) | 2.29 in (2002) |
| August 23 | 102.0°F (1969) | 33.1°F (1966) | 6.05 in (2014) |
| August 24 | 102.0°F (1969) | 33.1°F (1934) | 4.55 in (2014) |
| August 25 | 99.0°F (1985) | 28.9°F (1992) | 2.42 in (1979) |
| August 26 | 97.0°F (1937) | 33.1°F (1914) | 0.99 in (1941) |
| August 27 | 98.1°F (1971) | 33.1°F (1954) | 0.96 in (2018) |
| August 28 | 98.1°F (1939) | 35.1°F (1960) | 0.31 in (1941) |
| August 29 | 96.1°F (1938) | 36.0°F (1937) | 0.92 in (1993) |
| August 30 | 99.0°F (1936) | 32.0°F (1980) | 2.00 in (1951) |
| August 31 | 102.9°F (1955) | 34.0°F (1992) | 1.10 in (1986) |