Finland · 1991–2020 normal
Ylitornio in
December.
Typical December weather in Ylitornio: -4.2°C by day, -12°C at night, 54 mm of rain over 12.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-4.2°C
Typical low-12°C
Rain54 mm
Wet days12.1
Comfort score 5 this month (July leads the year at 69). Daylight is calculated as 2 h 36 from latitude 66.31°.
Event window
Long northern nights in December
At 66.3° the calculated mid-month daylight is 2 h 36. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -12°C.
Event window
Frost-level nights in December
The measured night-time normal is -12°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 630779
- NOAA station
- SWE00140712 · OVERTORNEA
- Station distance
- 8 km from the place centre
- Coverage
- Good coverage · 24 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.