United States · 1991–2020 normal
Boulder in
October.
Typical October weather in Boulder: 14.4°C by day, -2.2°C at night, 19 mm of rain over 4.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high14.4°C
Typical low-2.2°C
Rain19 mm
Wet days4.5
Comfort score 36 this month (September leads the year at 73). Daylight is calculated as 10 h 49 from latitude 46.24°.
Event window
Frost-level nights in October
The measured night-time normal is -2.2°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 · 28 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
From evidence to a booked trip
Know the month.
Then plan the trip.
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