August weather in Riverton, WY
The average temperature in Riverton in August is 69.0°F (52.2°F–85.7°F). Average precipitation: 0.45 inches.
August is a summer month in Riverton, and is warmer than the annual average of 43.9°F. Daily temperatures swing about 33.5°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 13h 46m. For travel, August is a comfortable month to visit.
Avg High
85.7°F
Avg Low
52.2°F
Precipitation
0.45 in
Daylight
13h 46m
August records in Riverton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.9°F (1988) | 37.0°F (1950) | 3.05 in (1912) |
| August 2 | 99.0°F (2008) | 39.0°F (1935) | 0.41 in (1994) |
| August 3 | 98.1°F (2001) | 43.0°F (1911) | 0.29 in (1948) |
| August 4 | 99.0°F (1955) | 39.9°F (1944) | 0.22 in (1977) |
| August 5 | 98.1°F (1961) | 39.0°F (1980) | 0.36 in (2011) |
| August 6 | 102.0°F (1979) | 42.1°F (1932) | 0.52 in (1997) |
| August 7 | 100.9°F (1949) | 30.9°F (1912) | 0.28 in (2023) |
| August 8 | 100.0°F (1949) | 37.9°F (1939) | 0.57 in (1930) |
| August 9 | 98.1°F (1983) | 37.9°F (1946) | 0.41 in (1964) |
| August 10 | 98.1°F (1990) | 37.0°F (1985) | 0.92 in (1968) |
| August 11 | 100.9°F (1969) | 37.9°F (1907) | 0.97 in (1983) |
| August 12 | 99.0°F (2018) | 39.9°F (1907) | 0.32 in (1945) |
| August 13 | 100.0°F (2003) | 39.0°F (1951) | 1.20 in (1930) |
| August 14 | 99.0°F (2007) | 37.0°F (1985) | 0.52 in (1908) |
| August 15 | 98.1°F (2003) | 35.1°F (1951) | 0.45 in (2008) |
| August 16 | 98.1°F (2000) | 35.1°F (1925) | 0.47 in (2009) |
| August 17 | 98.1°F (1948) | 33.1°F (1987) | 4.05 in (1912) |
| August 18 | 96.1°F (1973) | 35.1°F (1987) | 2.00 in (1912) |
| August 19 | 100.9°F (1986) | 35.1°F (1978) | 0.86 in (2004) |
| August 20 | 97.0°F (2013) | 37.0°F (1978) | 0.46 in (1965) |
| August 21 | 99.0°F (2025) | 35.1°F (1974) | 0.13 in (2002) |
| August 22 | 98.1°F (1960) | 36.0°F (1966) | 0.25 in (1926) |
| August 23 | 97.0°F (1949) | 34.0°F (1947) | 0.80 in (1958) |
| August 24 | 95.0°F (1955) | 35.1°F (1960) | 0.40 in (1972) |
| August 25 | 100.9°F (1919) | 34.0°F (1989) | 0.25 in (2022) |
| August 26 | 98.1°F (1969) | 33.1°F (1960) | 1.54 in (1933) |
| August 27 | 98.1°F (1981) | 30.9°F (1992) | 0.55 in (1933) |
| August 28 | 97.0°F (2011) | 36.0°F (1911) | 0.34 in (2025) |
| August 29 | 97.0°F (1948) | 32.0°F (1989) | 0.09 in (2011) |
| August 30 | 97.0°F (2012) | 32.0°F (1964) | 0.42 in (1971) |
| August 31 | 97.0°F (1948) | 28.9°F (1908) | 0.20 in (1938) |