Finland · 1991–2020 normal
Mänttä in
December.
Typical December weather in Mänttä: -1.6°C by day, -6.6°C at night, 48 mm of rain over 11 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-1.6°C
Typical low-6.6°C
Rain48 mm
Wet days11
Comfort score 5 this month (July leads the year at 75). Daylight is calculated as 5 h 12 from latitude 62.03°.
Event window
Long northern nights in December
At 62.0° the calculated mid-month daylight is 5 h 12. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -6.6°C.
Event window
Frost-level nights in December
The measured night-time normal is -6.6°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 646705
- NOAA station
- FIE00143586 · JAMSA HALLI LENTOKENTTA
- Station distance
- 21.1 km from the place centre
- Coverage
- Good coverage · 18 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.