January weather in Granby, CO
The average temperature in Granby in January is 14.1°F (2.5°F–25.8°F). Average precipitation: 0.87 inches.
January is a winter month in Granby, and is cooler than the annual average of 37.4°F. Daily temperatures swing about 23.3°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 27m. For travel, January is cold.
Avg High
25.8°F
Avg Low
2.5°F
Precipitation
0.87 in
Daylight
9h 27m
January records in Granby
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 45.0°F (2023) | -31.0°F (1995) | 0.29 in (2022) |
| January 2 | 45.0°F (2009) | -38.0°F (1979) | 0.26 in (2013) |
| January 3 | 43.0°F (2026) | -36.9°F (1952) | 0.68 in (2023) |
| January 4 | 46.9°F (2026) | -36.0°F (1972) | 0.33 in (1978) |
| January 5 | 46.9°F (2026) | -23.1°F (2009) | 0.51 in (2022) |
| January 6 | 46.0°F (1956) | -35.0°F (2017) | 0.25 in (2008) |
| January 7 | 46.9°F (1954) | -38.9°F (1982) | 0.40 in (1993) |
| January 8 | 46.0°F (1956) | -36.9°F (1979) | 0.63 in (1962) |
| January 9 | 48.0°F (2018) | -29.0°F (1979) | 0.39 in (1993) |
| January 10 | 48.0°F (2018) | -45.9°F (1962) | 0.40 in (2000) |
| January 11 | 44.1°F (1990) | -43.1°F (1962) | 0.21 in (1979) |
| January 12 | 45.0°F (1953) | -35.0°F (1963) | 0.42 in (1972) |
| January 13 | 41.0°F (1969) | -40.0°F (1963) | 0.34 in (2007) |
| January 14 | 42.1°F (1969) | -27.0°F (1964) | 0.20 in (1967) |
| January 15 | 43.0°F (2000) | -29.0°F (2007) | 0.46 in (2024) |
| January 16 | 46.0°F (2000) | -34.1°F (2007) | 0.39 in (1956) |
| January 17 | 46.0°F (2000) | -35.0°F (1949) | 0.19 in (1998) |
| January 18 | 39.9°F (1954) | -36.0°F (1984) | 0.32 in (2019) |
| January 19 | 46.0°F (2018) | -31.0°F (1949) | 0.33 in (2000) |
| January 20 | 45.0°F (1950) | -29.0°F (1988) | 0.50 in (1962) |
| January 21 | 48.9°F (1950) | -32.1°F (2025) | 0.37 in (1985) |
| January 22 | 39.9°F (1967) | -27.9°F (1975) | 0.25 in (1964) |
| January 23 | 42.1°F (1970) | -27.0°F (1973) | 0.21 in (1952) |
| January 24 | 43.0°F (1970) | -25.1°F (1979) | 0.38 in (1950) |
| January 25 | 41.0°F (1953) | -24.0°F (1962) | 0.37 in (1952) |
| January 26 | 48.0°F (1982) | -22.0°F (1976) | 0.76 in (1969) |
| January 27 | 48.0°F (2003) | -24.0°F (2017) | 0.29 in (1969) |
| January 28 | 45.0°F (2003) | -26.0°F (1973) | 0.25 in (1980) |
| January 29 | 46.9°F (1986) | -32.1°F (1949) | 0.78 in (1951) |
| January 30 | 46.9°F (1986) | -26.0°F (1991) | 0.29 in (2008) |
| January 31 | 45.0°F (1986) | -32.1°F (1979) | 0.55 in (1996) |