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.
30 days — Narvik
14 real + 16 synthesised
Fri · Today Showers
+18°+11°0,8 mm
Sat · Tomorrow Showers
+15°+9°1,3 mm
Sunday 7/6 Showers
+13°+8°2,5 mm
Monday 8/6 Rain
+10°+7°9,6 mm
Tuesday 9/6 Clear
+15°+6°1%
Wednesday 10/6 Clear
+17°+12°1%
Thursday 11/6 Showers
+16°+11°0,6 mm
Friday 12/6 Partly cloudy
+13°+9°73%
Saturday 13/6 Partly cloudy
+14°+9°5%
Sunday 14/6 Showers
+11°+9°2,1 mm
Monday 15/6 Rain
+13°+6°7,8 mm
Tuesday 16/6 Showers
+16°+9°0,4 mm
Wednesday 17/6 Showers
+15°+11°0,8 mm
Thursday 18/6 Clear
+21°+12°1%
Friday 19/6 Rain (climate normal)
+12°+2°8,0 mm
Saturday 20/6 Partly cloudy (climate normal)
+12°+2°20%
Sunday 21/6 Partly cloudy (climate normal)
+14°+3°20%
Monday 22/6 Rain (climate normal)
+12°+2°5,2 mm
Tuesday 23/6 Partly cloudy (climate normal)
+10°+1°20%
Wednesday 24/6 Partly cloudy (climate normal)
+9°0°20%
Thursday 25/6 Rain (climate normal)
+11°+1°6,1 mm
Friday 26/6 Partly cloudy (climate normal)
+12°+2°20%
Saturday 27/6 Partly cloudy (climate normal)
+13°+3°20%
Sunday 28/6 Rain (climate normal)
+15°+4°3,3 mm
Monday 29/6 Partly cloudy (climate normal)
+13°+2°20%
Tuesday 30/6 Partly cloudy (climate normal)
+10°+1°20%
Wednesday 1/7 Rain (climate normal)
+11°+2°10,3 mm
Thursday 2/7 Partly cloudy (climate normal)
+11°+2°20%
Friday 3/7 Partly cloudy (climate normal)
+14°+4°20%
Saturday 4/7 Rain (climate normal)
+15°+4°10,3 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.