August weather in Evanston, WY
The average temperature in Evanston in August is 63.2°F (46.7°F–79.6°F). Average precipitation: 1.10 inches.
August is a summer month in Evanston, and is warmer than the annual average of 42°F. Daily temperatures swing about 32.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 13h 39m. For travel, August is a comfortable month to visit.
Avg High
79.6°F
Avg Low
46.7°F
Precipitation
1.10 in
Daylight
13h 39m
August records in Evanston
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 90.0°F (1949) | 34.0°F (1903) | 0.76 in (1914) |
| August 2 | 90.0°F (1969) | 30.0°F (1935) | 0.56 in (1930) |
| August 3 | 93.9°F (2024) | 30.9°F (1935) | 1.54 in (1926) |
| August 4 | 91.9°F (1979) | 30.9°F (1980) | 1.30 in (1945) |
| August 5 | 93.9°F (1979) | 35.1°F (1928) | 1.28 in (1993) |
| August 6 | 91.9°F (2024) | 36.0°F (1924) | 0.65 in (1955) |
| August 7 | 91.0°F (1990) | 33.1°F (1996) | 0.85 in (2014) |
| August 8 | 91.9°F (1990) | 30.0°F (1956) | 0.80 in (2016) |
| August 9 | 91.0°F (1969) | 33.1°F (1939) | 0.59 in (1968) |
| August 10 | 90.0°F (1960) | 32.0°F (1939) | 0.68 in (1952) |
| August 11 | 91.9°F (1972) | 27.0°F (1907) | 1.28 in (1997) |
| August 12 | 93.0°F (1940) | 34.0°F (1935) | 0.75 in (1965) |
| August 13 | 93.9°F (1940) | 33.1°F (1953) | 0.97 in (1921) |
| August 14 | 90.0°F (1940) | 28.9°F (1959) | 0.70 in (1978) |
| August 15 | 91.0°F (1962) | 28.9°F (1974) | 0.50 in (1987) |
| August 16 | 89.1°F (1958) | 28.9°F (1938) | 0.57 in (1957) |
| August 17 | 90.0°F (2020) | 30.9°F (1954) | 0.47 in (1979) |
| August 18 | 91.0°F (1986) | 28.9°F (1902) | 0.80 in (1977) |
| August 19 | 90.0°F (1903) | 30.9°F (1978) | 0.50 in (1968) |
| August 20 | 93.9°F (2025) | 27.0°F (1964) | 1.02 in (1906) |
| August 21 | 91.9°F (2025) | 27.0°F (1904) | 1.31 in (1986) |
| August 22 | 89.1°F (1913) | 26.1°F (1918) | 1.15 in (1968) |
| August 23 | 89.1°F (1919) | 28.0°F (1947) | 0.37 in (1997) |
| August 24 | 90.0°F (1969) | 28.9°F (1992) | 0.77 in (2014) |
| August 25 | 91.0°F (1969) | 26.1°F (1960) | 0.64 in (2006) |
| August 26 | 93.0°F (1969) | 25.0°F (1992) | 0.55 in (1977) |
| August 27 | 89.1°F (1985) | 26.1°F (1956) | 0.62 in (1932) |
| August 28 | 89.1°F (1985) | 26.1°F (1956) | 0.42 in (1927) |
| August 29 | 89.1°F (1948) | 28.0°F (1956) | 0.99 in (1937) |
| August 30 | 91.0°F (2019) | 25.0°F (1910) | 0.97 in (1932) |
| August 31 | 89.1°F (1985) | 23.0°F (1962) | 0.92 in (2000) |