August weather in Green River, WY
The average temperature in Green River in August is 67.9°F (50.7°F–85.0°F). Average precipitation: 0.64 inches.
August is a summer month in Green River, and is warmer than the annual average of 44.1°F. Daily temperatures swing about 34.3°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 13h 40m. For travel, August is a comfortable month to visit.
Avg High
85.0°F
Avg Low
50.7°F
Precipitation
0.64 in
Daylight
13h 40m
August records in Green River
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (2008) | 37.9°F (1975) | 0.64 in (1912) |
| August 2 | 98.1°F (2020) | 37.0°F (1928) | 0.86 in (1953) |
| August 3 | 98.1°F (2024) | 37.9°F (1911) | 0.62 in (1930) |
| August 4 | 99.0°F (2024) | 32.0°F (1980) | 0.86 in (1951) |
| August 5 | 98.1°F (1979) | 36.0°F (1980) | 0.90 in (1925) |
| August 6 | 100.0°F (1979) | 37.9°F (1950) | 0.58 in (2009) |
| August 7 | 99.0°F (2001) | 30.0°F (1977) | 0.84 in (1945) |
| August 8 | 97.0°F (2001) | 32.0°F (1977) | 1.10 in (1930) |
| August 9 | 99.0°F (1936) | 37.9°F (1939) | 0.53 in (1983) |
| August 10 | 98.1°F (1898) | 32.0°F (1985) | 0.71 in (1983) |
| August 11 | 98.1°F (1928) | 30.0°F (1907) | 0.71 in (1959) |
| August 12 | 99.0°F (1940) | 33.1°F (1985) | 0.43 in (1909) |
| August 13 | 98.1°F (1940) | 30.0°F (1938) | 0.40 in (2024) |
| August 14 | 100.0°F (1940) | 37.0°F (1988) | 1.11 in (1978) |
| August 15 | 99.0°F (1933) | 33.1°F (1938) | 0.45 in (2017) |
| August 16 | 97.0°F (1933) | 32.0°F (1968) | 1.35 in (1931) |
| August 17 | 98.1°F (1936) | 34.0°F (2009) | 1.13 in (2007) |
| August 18 | 96.1°F (1936) | 34.0°F (1987) | 0.30 in (1912) |
| August 19 | 98.1°F (2020) | 34.0°F (1912) | 0.76 in (2021) |
| August 20 | 95.0°F (1932) | 30.9°F (1980) | 0.33 in (1945) |
| August 21 | 100.0°F (2025) | 30.9°F (1980) | 0.38 in (1986) |
| August 22 | 96.1°F (1937) | 32.0°F (1918) | 0.33 in (2021) |
| August 23 | 98.1°F (1935) | 34.0°F (1988) | 0.60 in (2014) |
| August 24 | 95.0°F (1905) | 30.9°F (1962) | 0.28 in (2023) |
| August 25 | 96.1°F (2011) | 30.0°F (1910) | 0.40 in (1941) |
| August 26 | 95.0°F (1913) | 26.1°F (1992) | 0.59 in (1938) |
| August 27 | 98.1°F (1898) | 28.0°F (1992) | 0.47 in (1977) |
| August 28 | 98.1°F (1898) | 30.0°F (1992) | 0.75 in (1946) |
| August 29 | 99.0°F (1898) | 30.0°F (1960) | 0.31 in (1964) |
| August 30 | 95.0°F (1954) | 28.0°F (1910) | 0.91 in (1932) |
| August 31 | 93.0°F (1948) | 23.0°F (1908) | 0.34 in (1990) |