Finland · 1991–2020 normal

Petäjävesi in
December.

Typical December weather in Petäjävesi: -2.6°C by day, -8.5°C at night, 65 mm of rain over 14.1 wet days. These are measured 1991–2020 station normals, not a forecast.

Typical high-2.6°C
Typical low-8.5°C
Rain65 mm
Wet days14.1

Comfort score 5 this month (July leads the year at 68). Daylight is calculated as 5 h 06 from latitude 62.25°.

Event window

Long northern nights in December

At 62.3° the calculated mid-month daylight is 5 h 06. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -8.5°C.

Event window

Frost-level nights in December

The measured night-time normal is -8.5°C, so frost is typical rather than exceptional this month.

The evidence behind this page

One month,
from the same station.

Place identity
GeoNames 641974
NOAA station
FIE00143812 · MULTIA PIRTTIPERA
Station distance
19.4 km from the place centre
Coverage
Good coverage · 17 usable years
Important limit
Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.