United States · 1991–2020 normal

Mountain View in
December.

Typical December weather in Mountain View: 7.6°C by day, -3°C at night, 75 mm of rain over 4.5 wet days. These are measured 1991–2020 station normals, not a forecast.

Typical high7.6°C
Typical low-3°C
Rain75 mm
Wet days4.5

Comfort score 7 this month (September leads the year at 80). Daylight is calculated as 9 h 38 from latitude 37.00°.

Event window

Frost-level nights in December

The measured night-time normal is -3°C, so frost is typical rather than exceptional this month.

The evidence behind this page

One month,
from the same station.

Place identity
GeoNames 4399745
NOAA station
USC00238184 · SUMMERSVILLE 3 SE
Station distance
17.5 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.