Finland · 1991–2020 normal
Ilomantsi in
December.
Typical December weather in Ilomantsi: -3.4°C by day, -8.7°C at night, 46 mm of rain over 12.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high-3.4°C
Typical low-8.7°C
Rain46 mm
Wet days12.5
Comfort score 5 this month (July leads the year at 74). Daylight is calculated as 4 h 55 from latitude 62.67°.
Event window
Long northern nights in December
At 62.7° the calculated mid-month daylight is 4 h 55. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -8.7°C.
Event window
Frost-level nights in December
The measured night-time normal is -8.7°C, so frost is typical rather than exceptional this month.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 656709
- NOAA station
- FIE00145052 · ILOMANTSI MEKRIJARVI
- Station distance
- 11.1 km from the place centre
- Coverage
- Good coverage · 22 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.