S
M
T
W
T
F
S
30
65°
55°
31
65°
57°
1
66°
56°
2
69°
57°
3
69°
57°
4
68°
56°
5
68°
56°
6
67°
55°
7
67°
56°
8
66°
56°
9
66°
55°
10
65°
55°
11
66°
54°
12
65°
55°
13
64°
53°
14
59°
48°
15
58°
49°
16
62°
46°
17
62°
50°
18
63°
52°
19
63°
52°
20
62°
46°
21
58°
46°
22
58°
51°
23
60°
53°
24
61°
52°
25
62°
51°
26
61°
50°
27
58°
51°
28
57°
50°
29
56°
51°
30
56°
43°
1
58°
42°
2
55°
42°
3
52°
41°
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 57°. The average high for September is 62° with an average low of 51°. 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.