August weather in Circle, MT
The average temperature in Circle in August is 71.1°F (55.4°F–86.8°F). Average precipitation: 1.40 inches.
August is a summer month in Circle, and is warmer than the annual average of 45.1°F. Daily temperatures swing about 31.4°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 14h 4m. For travel, August is a comfortable month to visit.
Avg High
86.8°F
Avg Low
55.4°F
Precipitation
1.40 in
Daylight
14h 4m
August records in Circle
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1964) | 43.0°F (2002) | 0.58 in (1975) |
| August 2 | 105.1°F (2024) | 42.1°F (1978) | 0.65 in (1989) |
| August 3 | 104.0°F (2024) | 37.0°F (1978) | 0.96 in (1994) |
| August 4 | 105.1°F (1983) | 39.9°F (1972) | 0.70 in (2013) |
| August 5 | 100.9°F (2022) | 39.0°F (1977) | 0.58 in (2011) |
| August 6 | 104.0°F (1995) | 42.1°F (2006) | 1.59 in (1965) |
| August 7 | 109.0°F (1983) | 41.0°F (1964) | 0.62 in (1970) |
| August 8 | 104.0°F (1971) | 43.0°F (1966) | 1.20 in (1994) |
| August 9 | 100.9°F (1970) | 39.0°F (2024) | 0.98 in (1976) |
| August 10 | 104.0°F (2018) | 36.0°F (1997) | 0.85 in (2010) |
| August 11 | 105.1°F (2018) | 34.0°F (1964) | 0.25 in (2019) |
| August 12 | 107.1°F (1984) | 33.1°F (1964) | 0.88 in (2019) |
| August 13 | 102.9°F (1972) | 39.9°F (1975) | 0.69 in (2012) |
| August 14 | 104.0°F (2015) | 36.0°F (1977) | 0.86 in (1972) |
| August 15 | 104.0°F (1971) | 41.0°F (1975) | 1.70 in (2009) |
| August 16 | 104.0°F (2003) | 39.0°F (2012) | 0.75 in (1968) |
| August 17 | 102.9°F (2003) | 37.9°F (1977) | 0.59 in (1980) |
| August 18 | 102.0°F (1964) | 39.9°F (1969) | 1.67 in (1995) |
| August 19 | 99.0°F (1981) | 36.0°F (2004) | 0.54 in (2016) |
| August 20 | 99.0°F (1967) | 37.9°F (2005) | 0.85 in (1966) |
| August 21 | 100.9°F (1971) | 39.9°F (2000) | 1.07 in (1974) |
| August 22 | 102.0°F (1969) | 36.0°F (1966) | 0.92 in (2015) |
| August 23 | 104.0°F (1969) | 34.0°F (2015) | 1.70 in (2014) |
| August 24 | 100.9°F (1970) | 32.0°F (1992) | 1.36 in (1968) |
| August 25 | 102.0°F (1969) | 37.9°F (1964) | 1.20 in (1989) |
| August 26 | 102.0°F (1969) | 37.0°F (2014) | 1.21 in (1987) |
| August 27 | 99.0°F (1967) | 39.0°F (1987) | 0.28 in (2018) |
| August 28 | 100.9°F (1971) | 32.0°F (1988) | 0.33 in (2007) |
| August 29 | 105.1°F (1971) | 34.0°F (1992) | 0.52 in (1964) |
| August 30 | 99.0°F (1981) | 34.0°F (1980) | 0.88 in (2010) |
| August 31 | 99.0°F (1983) | 27.0°F (1994) | 0.81 in (1989) |