S
M
T
W
T
F
S
30
70°
62°
31
70°
63°
1
81°
68°
2
85°
68°
3
80°
64°
4
78°
59°
5
74°
56°
6
72°
54°
7
78°
58°
8
75°
63°
9
80°
62°
10
72°
57°
11
71°
55°
12
72°
55°
13
75°
59°
14
76°
60°
15
75°
60°
16
76°
53°
17
74°
54°
18
68°
52°
19
72°
55°
20
76°
58°
21
76°
58°
22
75°
57°
23
74°
56°
24
68°
56°
25
73°
55°
26
73°
56°
27
72°
53°
28
62°
53°
29
63°
51°
30
62°
49°
1
60°
48°
2
61°
52°
3
65°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sweden
Sweden's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 48° and 64°. The average high for September is 72° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Sweden. See also: October | November | December.