S
M
T
W
T
F
S
30
68°
58°
31
69°
57°
1
69°
57°
2
67°
56°
3
66°
57°
4
69°
57°
5
68°
56°
6
67°
56°
7
66°
55°
8
65°
56°
9
67°
55°
10
65°
54°
11
65°
54°
12
64°
52°
13
62°
51°
14
62°
50°
15
61°
54°
16
61°
50°
17
58°
50°
18
57°
48°
19
57°
49°
20
56°
51°
21
58°
52°
22
58°
52°
23
59°
51°
24
62°
51°
25
58°
50°
26
59°
50°
27
60°
52°
28
59°
50°
29
61°
48°
30
60°
46°
1
58°
41°
2
55°
41°
3
52°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stockholm
Stockholm's September 2026 forecast shows daily high temperatures ranging from 52° to 69°, with overnight lows between 41° and 58°. The average high for September is 62° with an average low of 52°. 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 Stockholm. See also: October | November | December.