Days 1-14 are a real forecast from global weather models. Days 15-30 are season-typical values based on climate normals 1991-2020 (MET) — good for planning, NOT an exact forecast that far ahead.
The forecast for Mo i Rana and the places around it comes from the same weather models as the place pages. Radar: RainViewer, images from the last two hours.
30 days — Mo i Rana
14 real + 16 synthesised
Fri · Today Cloudy
+9°+6°19%
Sat · Tomorrow Showers
+11°+5°2,3 mm
Sunday 4/10 Showers
+6°+3°12,6 mm
Monday 5/10 Showers
+8°+4°42,2 mm
Tuesday 6/10 Showers
+5°+2°30,8 mm
Wednesday 7/10 Showers
+2°+1°8,4 mm
Thursday 8/10 Light rain
+2°-1°1,9 mm
Friday 9/10 Cloudy
+1°-1°0,3 mm
Saturday 10/10 Light rain
+1°-1°1,3 mm
Sunday 11/10 Cloudy
+2°0°0,2 mm
Monday 12/10 Clear
+2°-1°14%
Tuesday 13/10 Cloudy
+3°-1°9,3 mm
Wednesday 14/10 Fog
+5°+1°4,9 mm
Thursday 15/10 Showers
+4°+2°19,4 mm
Friday 16/10 Rain (climate normal)
+3°-3°10,6 mm
Saturday 17/10 Partly cloudy (climate normal)
+5°-2°20%
Sunday 18/10 Partly cloudy (climate normal)
+5°-2°20%
Monday 19/10 Rain (climate normal)
+5°-2°6,2 mm
Tuesday 20/10 Partly cloudy (climate normal)
+1°-5°20%
Wednesday 21/10 Partly cloudy (climate normal)
-1°-6°20%
Thursday 22/10 Rain (climate normal)
+2°-4°9,5 mm
Friday 23/10 Partly cloudy (climate normal)
+4°-3°20%
Saturday 24/10 Partly cloudy (climate normal)
+3°-3°20%
Sunday 25/10 Rain (climate normal)
+5°-2°6,2 mm
Monday 26/10 Partly cloudy (climate normal)
+3°-4°20%
Tuesday 27/10 Partly cloudy (climate normal)
+2°-4°20%
Wednesday 28/10 Rain (climate normal)
0°-5°10,9 mm
Thursday 29/10 Partly cloudy (climate normal)
0°-5°20%
Friday 30/10 Partly cloudy (climate normal)
+4°-3°20%
Saturday 31/10 Rain (climate normal)
+4°-3°6,7 mm
How does the long-range forecast work?
Days 1-14: Fetched live from global weather models (ECMWF, GFS) with statistical correction. Reliability about 85 % for days 1-3, about 60 % for days 7-10, about 45 % for days 11-14.
Days 15-30: A real forecast does not exist that far ahead (chaotic system). Instead we show season-typical values: the monthly average Tmax/Tmin from climate normals 1991-2020, with mild weekly variation.
Use: «About how warm is it usually in Oslo the last week of July?» — a good question for days 15-30. «Will it rain on 27 May?» — no serious forecast can answer that.