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