August weather in Fort Collins, CO
The average temperature in Fort Collins in August is 70.7°F (56.5°F–85.0°F). Average precipitation: 1.45 inches.
August is a summer month in Fort Collins, and is warmer than the annual average of 50.7°F. Daily temperatures swing about 28.5°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 37m. For travel, August is a comfortable month to visit.
Avg High
85.0°F
Avg Low
56.5°F
Precipitation
1.45 in
Daylight
13h 37m
August records in Fort Collins
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.0°F (1902) | 43.0°F (1903) | 2.45 in (2023) |
| August 2 | 98.1°F (1940) | 43.0°F (1906) | 2.19 in (2007) |
| August 3 | 96.1°F (1940) | 45.0°F (1911) | 3.06 in (1951) |
| August 4 | 97.0°F (1960) | 46.0°F (1898) | 3.01 in (1951) |
| August 5 | 97.0°F (2022) | 45.0°F (1928) | 1.11 in (1905) |
| August 6 | 97.0°F (2012) | 45.0°F (1928) | 2.26 in (1997) |
| August 7 | 98.1°F (1995) | 44.1°F (1917) | 0.57 in (1957) |
| August 8 | 99.0°F (1969) | 45.0°F (1904) | 0.59 in (1961) |
| August 9 | 97.0°F (2020) | 46.0°F (1902) | 1.08 in (1968) |
| August 10 | 93.9°F (1936) | 43.0°F (1974) | 1.21 in (1941) |
| August 11 | 98.1°F (1959) | 42.1°F (1974) | 0.88 in (1994) |
| August 12 | 95.0°F (1996) | 45.0°F (1907) | 1.60 in (1941) |
| August 13 | 98.1°F (2025) | 44.1°F (1953) | 2.05 in (1975) |
| August 14 | 97.0°F (2025) | 46.0°F (1900) | 1.28 in (1930) |
| August 15 | 96.1°F (2015) | 45.0°F (1950) | 0.93 in (2008) |
| August 16 | 99.0°F (2002) | 37.9°F (1893) | 1.89 in (1932) |
| August 17 | 95.0°F (1924) | 45.0°F (1900) | 0.74 in (1997) |
| August 18 | 98.1°F (1986) | 42.1°F (1960) | 1.06 in (2004) |
| August 19 | 96.1°F (2019) | 43.0°F (1897) | 2.58 in (1961) |
| August 20 | 98.1°F (2019) | 42.1°F (1895) | 0.68 in (1920) |
| August 21 | 96.1°F (1898) | 39.9°F (1939) | 0.91 in (1969) |
| August 22 | 98.1°F (2020) | 33.1°F (1904) | 0.28 in (1896) |
| August 23 | 98.1°F (2011) | 39.0°F (1964) | 0.73 in (1946) |
| August 24 | 95.0°F (2020) | 39.9°F (1899) | 1.54 in (1992) |
| August 25 | 98.1°F (2020) | 32.0°F (1910) | 0.84 in (2023) |
| August 26 | 95.0°F (1985) | 33.1°F (1910) | 0.67 in (1933) |
| August 27 | 95.0°F (2010) | 39.0°F (1906) | 0.93 in (2004) |
| August 28 | 95.0°F (1899) | 39.0°F (1964) | 1.37 in (1932) |
| August 29 | 96.1°F (1898) | 41.0°F (1917) | 0.65 in (2003) |
| August 30 | 96.1°F (1990) | 39.0°F (1964) | 2.49 in (2003) |
| August 31 | 97.0°F (2011) | 36.0°F (1910) | 0.71 in (1972) |