United States · 1991–2020 normal

Vernon Valley in
December.

Typical December weather in Vernon Valley: 4.8°C by day, -5.1°C at night, 100 mm of rain over 9.4 wet days. These are measured 1991–2020 station normals, not a forecast.

Typical high4.8°C
Typical low-5.1°C
Rain100 mm
Wet days9.4

Comfort score 5 this month (September leads the year at 76). Daylight is calculated as 9 h 13 from latitude 41.24°.

Event window

Frost-level nights in December

The measured night-time normal is -5.1°C, so frost is typical rather than exceptional this month.

The evidence behind this page

One month,
from the same station.

Place identity
GeoNames 5105867
NOAA station
USC00288644 · SUSSEX 1 NW
Station distance
11.4 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.