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 Bergen 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 — Bergen
14 real + 16 synthesised
Sat · Today Showers
+14°+11°17,2 mm
Sun · Tomorrow Rain
+13°+10°40,7 mm
Monday 5/10 Rain
+13°+11°54,8 mm
Tuesday 6/10 Showers
+11°+10°15,6 mm
Wednesday 7/10 Showers
+11°+8°12,7 mm
Thursday 8/10 Clear
+10°+8°2,4 mm
Friday 9/10 Cloudy
+11°+8°15,7 mm
Saturday 10/10 Showers
+10°+8°25,6 mm
Sunday 11/10 Showers
+9°+6°20,7 mm
Monday 12/10 Clear
+8°+4°0,2 mm
Tuesday 13/10 Cloudy
+9°+4°5,0 mm
Wednesday 14/10 Showers
+10°+8°15,3 mm
Thursday 15/10 Showers
+9°+7°0,9 mm
Friday 16/10 Showers
+10°+8°7,7 mm
Saturday 17/10 Rain (climate normal)
+10°+5°18,1 mm
Sunday 18/10 Partly cloudy (climate normal)
+12°+6°20%
Monday 19/10 Partly cloudy (climate normal)
+14°+8°20%
Tuesday 20/10 Rain (climate normal)
+13°+7°31,6 mm
Wednesday 21/10 Partly cloudy (climate normal)
+9°+5°20%
Thursday 22/10 Partly cloudy (climate normal)
+8°+4°20%
Friday 23/10 Rain (climate normal)
+10°+5°28,9 mm
Saturday 24/10 Partly cloudy (climate normal)
+12°+7°20%
Sunday 25/10 Partly cloudy (climate normal)
+13°+7°20%
Monday 26/10 Rain (climate normal)
+15°+8°33,4 mm
Tuesday 27/10 Partly cloudy (climate normal)
+14°+8°20%
Wednesday 28/10 Partly cloudy (climate normal)
+9°+5°20%
Thursday 29/10 Rain (climate normal)
+8°+4°32,5 mm
Friday 30/10 Partly cloudy (climate normal)
+8°+4°20%
Saturday 31/10 Partly cloudy (climate normal)
+10°+5°20%
Sunday 1/11 Rain (climate normal)
+10°+5°31,9 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.