August weather in Granby, CO
The average temperature in Granby in August is 57.8°F (42.8°F–72.7°F). Average precipitation: 1.68 inches.
August is a summer month in Granby, and is warmer than the annual average of 37.4°F. Daily temperatures swing about 29.9°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 13h 35m. For travel, August is a comfortable month to visit.
Avg High
72.7°F
Avg Low
42.8°F
Precipitation
1.68 in
Daylight
13h 35m
August records in Granby
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 86.0°F (2008) | 33.1°F (1995) | 0.43 in (2011) |
| August 2 | 84.9°F (2008) | 33.1°F (1975) | 0.71 in (1976) |
| August 3 | 84.0°F (2001) | 32.0°F (1975) | 0.76 in (2005) |
| August 4 | 84.0°F (1979) | 32.0°F (1950) | 0.54 in (1966) |
| August 5 | 84.9°F (1987) | 33.1°F (1956) | 0.49 in (1977) |
| August 6 | 84.9°F (1979) | 33.1°F (1950) | 0.46 in (1997) |
| August 7 | 82.9°F (1979) | 32.0°F (1950) | 0.48 in (2007) |
| August 8 | 82.9°F (1969) | 32.0°F (1950) | 0.70 in (1970) |
| August 9 | 82.0°F (1969) | 30.9°F (2009) | 0.83 in (1986) |
| August 10 | 88.0°F (2003) | 32.0°F (2002) | 0.85 in (1997) |
| August 11 | 84.9°F (2003) | 32.0°F (1974) | 0.54 in (1997) |
| August 12 | 82.9°F (2007) | 30.0°F (1997) | 1.19 in (1983) |
| August 13 | 84.9°F (2007) | 30.9°F (1985) | 0.44 in (2013) |
| August 14 | 84.9°F (2007) | 26.1°F (2002) | 0.35 in (2014) |
| August 15 | 84.9°F (2002) | 30.0°F (1951) | 0.71 in (1953) |
| August 16 | 84.9°F (2002) | 30.0°F (1980) | 0.73 in (2008) |
| August 17 | 84.9°F (2002) | 28.0°F (1980) | 1.05 in (2003) |
| August 18 | 82.9°F (1987) | 28.9°F (1950) | 0.75 in (2003) |
| August 19 | 86.0°F (2002) | 26.1°F (1978) | 1.25 in (2004) |
| August 20 | 84.0°F (2023) | 32.0°F (1978) | 0.61 in (2004) |
| August 21 | 82.9°F (2023) | 28.9°F (1964) | 0.46 in (1991) |
| August 22 | 84.9°F (2007) | 26.1°F (1949) | 0.61 in (1958) |
| August 23 | 82.0°F (1949) | 30.0°F (1964) | 0.46 in (1948) |
| August 24 | 81.0°F (2011) | 27.0°F (1968) | 0.69 in (1992) |
| August 25 | 81.0°F (1993) | 28.9°F (1962) | 0.86 in (2023) |
| August 26 | 86.0°F (2002) | 30.9°F (1960) | 0.56 in (1980) |
| August 27 | 82.0°F (1994) | 25.0°F (1992) | 0.33 in (1963) |
| August 28 | 82.0°F (2002) | 26.1°F (1992) | 0.41 in (2023) |
| August 29 | 82.0°F (1948) | 28.0°F (2004) | 0.49 in (2011) |
| August 30 | 82.0°F (1990) | 27.0°F (1964) | 0.48 in (1951) |
| August 31 | 82.0°F (1990) | 30.0°F (1956) | 0.39 in (1967) |