30-day forecast · Sundsvall
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 — Sundsvall 14 real + 16 synthesised
Scroll sideways · tap a day for details
Day by day — Sundsvall 30 days
Mon · Today
Clear
+7°
+1°
12%
⌄
Wind 5 m/s NW
Gusts 15 m/s
UV index 0 – Low
Chance of rain 12%
Sunrise 07:27
Sunset 15:41
Tue · Tomorrow
Cloudy
+10°
+3°
19%
⌄
Wind 6 m/s NW
Gusts 15 m/s
UV index 0 – Low
Chance of rain 19%
Sunrise 07:30
Sunset 15:38
Wednesday 4/11
Cloudy
+11°
+6°
16%
⌄
Wind 6 m/s NW
Gusts 16 m/s
UV index 0 – Low
Chance of rain 16%
Sunrise 07:33
Sunset 15:35
Thursday 5/11
Clear
+10°
+4°
7%
⌄
Wind 7 m/s NW
Gusts 18 m/s
UV index 0 – Low
Chance of rain 7%
Sunrise 07:36
Sunset 15:32
Friday 6/11
Clear
+7°
0°
13%
⌄
Wind 4 m/s NW
Gusts 12 m/s
UV index 2 – Low
Chance of rain 13%
Sunrise 07:39
Sunset 15:29
Saturday 7/11
Clear
+6°
0°
9%
⌄
Wind 4 m/s NW
Gusts 14 m/s
UV index 3 – Moderate
Chance of rain 9%
Sunrise 07:42
Sunset 15:26
Sunday 8/11
Clear
+5°
-1°
15%
⌄
Wind 3 m/s NW
Gusts 9 m/s
UV index 2 – Low
Chance of rain 15%
Sunrise 07:44
Sunset 15:24
Monday 9/11
Cloudy
+2°
-1°
22%
⌄
Wind 2 m/s W
Gusts 6 m/s
UV index 2 – Low
Chance of rain 22%
Sunrise 07:47
Sunset 15:21
Tuesday 10/11
Cloudy
+1°
-2°
31%
⌄
Wind 2 m/s S
Gusts 6 m/s
UV index 1 – Low
Chance of rain 31%
Sunrise 07:50
Sunset 15:18
Wednesday 11/11
Fog
+3°
+1°
4.5 mm
⌄
Wind 3 m/s S
Gusts 9 m/s
UV index 1 – Low
Chance of rain 91%
Sunrise 07:53
Sunset 15:15
Thursday 12/11
Cloudy
+3°
+1°
2.8 mm
⌄
Wind 4 m/s NW
Gusts 11 m/s
UV index 1 – Low
Chance of rain 70%
Sunrise 07:56
Sunset 15:13
Friday 13/11
Light rain
+3°
0°
14.9 mm
⌄
Wind 5 m/s NE
Gusts 13 m/s
UV index 1 – Low
Chance of rain 82%
Sunrise 07:59
Sunset 15:10
Saturday 14/11
Light rain
+1°
-1°
2.6 mm
⌄
Wind 3 m/s NE
Gusts 9 m/s
UV index 1 – Low
Chance of rain 79%
Sunrise 08:02
Sunset 15:07
Sunday 15/11
Cloudy
+1°
-2°
23%
⌄
Wind 1 m/s W
Gusts 4 m/s
UV index 2 – Low
Chance of rain 23%
Sunrise 08:05
Sunset 15:05
Monday 16/11
Rain (climate normal)
-1°
-5°
4.6 mm
⌄
Daytime ≈-4–3°
At night ≈-8–-2°
Rain 4.6 mm
(climate normal) Typical range for the season · 1991–2020
Tuesday 17/11
Partly cloudy (climate normal)
+2°
-3°
20%
⌄
Daytime ≈-1–5°
At night ≈-6–0°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Wednesday 18/11
Partly cloudy (climate normal)
+2°
-3°
20%
⌄
Daytime ≈-1–5°
At night ≈-6–0°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Thursday 19/11
Rain (climate normal)
+2°
-3°
4.1 mm
⌄
Daytime ≈-1–5°
At night ≈-6–0°
Rain 4.1 mm
(climate normal) Typical range for the season · 1991–2020
Friday 20/11
Partly cloudy (climate normal)
+1°
-4°
20%
⌄
Daytime ≈-2–4°
At night ≈-7–-1°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Saturday 21/11
Partly cloudy (climate normal)
-1°
-5°
20%
⌄
Daytime ≈-4–2°
At night ≈-8–-2°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Sunday 22/11
Rain (climate normal)
-1°
-5°
6.3 mm
⌄
Daytime ≈-4–2°
At night ≈-8–-2°
Rain 6.3 mm
(climate normal) Typical range for the season · 1991–2020
Monday 23/11
Partly cloudy (climate normal)
+3°
-3°
20%
⌄
Daytime ≈-1–6°
At night ≈-6–0°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Tuesday 24/11
Partly cloudy (climate normal)
+4°
-3°
20%
⌄
Daytime ≈1–7°
At night ≈-6–1°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Wednesday 25/11
Rain (climate normal)
+4°
-2°
8.5 mm
⌄
Daytime ≈1–7°
At night ≈-5–1°
Rain 8.5 mm
(climate normal) Typical range for the season · 1991–2020
Thursday 26/11
Partly cloudy (climate normal)
+3°
-3°
20%
⌄
Daytime ≈0–6°
At night ≈-6–0°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Friday 27/11
Partly cloudy (climate normal)
+1°
-4°
20%
⌄
Daytime ≈-2–4°
At night ≈-7–-1°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Saturday 28/11
Rain (climate normal)
-2°
-6°
6.3 mm
⌄
Daytime ≈-5–1°
At night ≈-9–-3°
Rain 6.3 mm
(climate normal) Typical range for the season · 1991–2020
Sunday 29/11
Partly cloudy (climate normal)
-2°
-6°
20%
⌄
Daytime ≈-5–1°
At night ≈-9–-3°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Monday 30/11
Partly cloudy (climate normal)
+1°
-4°
20%
⌄
Daytime ≈-2–4°
At night ≈-7–-1°
Rain 20%
(climate normal) Typical range for the season · 1991–2020
Tuesday 1/12
Rain (climate normal)
-1°
-7°
7.4 mm
⌄
Daytime ≈-4–2°
At night ≈-10–-4°
Rain 7.4 mm
(climate normal) Typical range for the season · 1991–2020
🗺️ Map — Sundsvall and around
Forecast day by day
📅 Forecast
🌧️ Radar now
▶
Markers show the daily high for Sundsvall and the places around it — all from our warm cache, the map makes no calls of its own. Radar mode fetches frames from RainViewer.
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 directly for Sundsvall, 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.