August weather in Sinclair, WY
The average temperature in Sinclair in August is 65.8°F (49.1°F–82.6°F). Average precipitation: 0.73 inches.
August is a summer month in Sinclair, and is warmer than the annual average of 43.1°F. Daily temperatures swing about 33.5°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 13h 41m. For travel, August is a comfortable month to visit.
Avg High
82.6°F
Avg Low
49.1°F
Precipitation
0.73 in
Daylight
13h 41m
August records in Sinclair
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 96.1°F (2000) | 41.0°F (1995) | 0.24 in (1984) |
| August 2 | 98.1°F (2000) | 42.1°F (1975) | 0.75 in (2023) |
| August 3 | 97.0°F (2024) | 39.9°F (2025) | 0.46 in (1951) |
| August 4 | 93.0°F (1979) | 39.0°F (1980) | 0.57 in (1970) |
| August 5 | 95.0°F (1979) | 39.9°F (1993) | 0.61 in (2018) |
| August 6 | 93.9°F (2001) | 43.0°F (1990) | 0.23 in (1997) |
| August 7 | 91.9°F (2024) | 36.0°F (1996) | 0.36 in (1963) |
| August 8 | 93.9°F (2000) | 39.0°F (1996) | 0.63 in (1968) |
| August 9 | 93.9°F (2000) | 41.0°F (1974) | 0.47 in (1974) |
| August 10 | 96.1°F (2022) | 37.0°F (2009) | 0.34 in (1952) |
| August 11 | 95.0°F (2000) | 39.0°F (2009) | 0.57 in (1989) |
| August 12 | 95.0°F (2018) | 37.9°F (2016) | 0.59 in (1989) |
| August 13 | 93.0°F (2003) | 37.0°F (2002) | 0.89 in (1979) |
| August 14 | 93.9°F (2003) | 39.9°F (1976) | 0.29 in (1965) |
| August 15 | 91.0°F (1998) | 37.0°F (1951) | 0.54 in (1987) |
| August 16 | 91.0°F (2020) | 37.9°F (1968) | 0.12 in (1984) |
| August 17 | 91.9°F (2020) | 32.0°F (2009) | 0.55 in (1992) |
| August 18 | 93.0°F (2020) | 34.0°F (1960) | 1.27 in (1977) |
| August 19 | 91.0°F (2013) | 32.0°F (2015) | 0.43 in (1959) |
| August 20 | 93.9°F (2025) | 31.1°F (2016) | 0.44 in (1963) |
| August 21 | 90.0°F (1960) | 34.0°F (1966) | 0.44 in (1999) |
| August 22 | 91.9°F (2009) | 34.0°F (1966) | 0.31 in (2021) |
| August 23 | 93.9°F (2020) | 35.1°F (1988) | 0.81 in (1980) |
| August 24 | 91.0°F (2011) | 33.1°F (2010) | 0.31 in (1977) |
| August 25 | 91.0°F (1997) | 36.0°F (1964) | 0.35 in (1980) |
| August 26 | 90.0°F (1985) | 35.1°F (1992) | 0.47 in (2004) |
| August 27 | 91.0°F (2020) | 34.0°F (1976) | 0.37 in (2006) |
| August 28 | 90.0°F (1996) | 35.1°F (2004) | 0.15 in (1964) |
| August 29 | 90.0°F (1998) | 36.0°F (1964) | 0.43 in (1951) |
| August 30 | 90.0°F (1998) | 34.0°F (1968) | 0.25 in (1963) |
| August 31 | 90.0°F (2022) | 28.0°F (1962) | 0.33 in (1984) |