United States · 1991–2020 normal
Boulder in
January.
Typical January weather in Boulder: 2°C by day, -11°C at night, 7 mm of rain over 2.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high2°C
Typical low-11°C
Rain7 mm
Wet days2.4
Comfort score 5 this month (September leads the year at 73). Daylight is calculated as 8 h 59 from latitude 46.24°.
Event window
Frost-level nights in January
The measured night-time normal is -11°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5641473
- NOAA station
- USC00241008 · BOULDER
- Station distance
- 0.8 km from the place centre
- Coverage
- Strong coverage · 29 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.