United States · 1991–2020 normal
Winnetka in
December.
Typical December weather in Winnetka: 2.9°C by day, -5.5°C at night, 60 mm of rain over 8.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high2.9°C
Typical low-5.5°C
Rain60 mm
Wet days8.1
Comfort score 5 this month (September leads the year at 84). Daylight is calculated as 9 h 07 from latitude 42.11°. Open-water sea temperature is 5.6°C (9 km from the place centre).
Event window
Frost-level nights in December
The measured night-time normal is -5.5°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4916891
- NOAA station
- USC00111497 · CHICAGO BOTANIC GARDEN
- Station distance
- 5.4 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.