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