Days 1-14 are a real forecast from global weather models. Days 15-30 are season-typical values based on SMHI climate normals 1991-2020 — good for planning, NOT an exact forecast that far ahead.
30 days — Örnsköldsvik
14 real + 16 synthesised
Wed · Today Light rain
+14°+10°16,4 mm
Thu · Tomorrow Showers
+17°+12°11,9 mm
Friday 7/8 Showers
+16°+11°0,9 mm
Saturday 8/8 Partly cloudy
+18°+8°6%
Sunday 9/8 Partly cloudy
+19°+12°0,6 mm
Monday 10/8 Partly cloudy
+17°+11°1,6 mm
Tuesday 11/8 Light rain
+16°+10°16,9 mm
Wednesday 12/8 Clear
+17°+7°6%
Thursday 13/8 Partly cloudy
+19°+13°0,2 mm
Friday 14/8 Cloudy
+17°+12°0,8 mm
Saturday 15/8 Showers
+14°+11°0,8 mm
Sunday 16/8 Showers
+18°+11°1,7 mm
Monday 17/8 Partly cloudy
+15°+12°0,2 mm
Tuesday 18/8 Showers
+17°+11°0,5 mm
Wednesday 19/8 Rain (climate normal)
+17°+7°6,8 mm
Thursday 20/8 Partly cloudy (climate normal)
+21°+10°20%
Friday 21/8 Partly cloudy (climate normal)
+22°+10°20%
Saturday 22/8 Rain (climate normal)
+20°+10°7,7 mm
Sunday 23/8 Partly cloudy (climate normal)
+18°+8°20%
Monday 24/8 Partly cloudy (climate normal)
+15°+6°20%
Tuesday 25/8 Rain (climate normal)
+18°+8°6,6 mm
Wednesday 26/8 Partly cloudy (climate normal)
+19°+9°20%
Thursday 27/8 Partly cloudy (climate normal)
+19°+9°20%
Friday 28/8 Rain (climate normal)
+20°+9°7,0 mm
Saturday 29/8 Partly cloudy (climate normal)
+20°+9°20%
Sunday 30/8 Partly cloudy (climate normal)
+17°+7°20%
Monday 31/8 Rain (climate normal)
+15°+6°6,6 mm
Tuesday 1/9 Partly cloudy (climate normal)
+12°+3°20%
Wednesday 2/9 Partly cloudy (climate normal)
+15°+5°20%
Thursday 3/9 Rain (climate normal)
+14°+5°5,1 mm
How does the long-range forecast work?
Days 1-14: Fetched live from global weather models (ECMWF, GFS) with statistical correction. Reliability ~85% for days 1-3, ~60% for days 7-10, ~45% for days 11-14.
Days 15-30: A real forecast does not exist that far ahead (a chaotic system). Instead we show season-typical values: the month’s average Tmax/Tmin from SMHI climate normals 1991-2020 (Stockholm baseline with latitude correction for Örnsköldsvik), with mild weekly variation.
Use: "Roughly how warm is it usually in Stockholm in the last week of July?" — a good question for days 15-30. "Will it rain on 27 May?" — no serious forecast can say.