S
M
T
W
T
F
S
30
65°
53°
31
63°
50°
1
63°
51°
2
62°
51°
3
62°
49°
4
63°
50°
5
61°
49°
6
62°
52°
7
61°
48°
8
62°
49°
9
61°
50°
10
60°
47°
11
59°
48°
12
60°
54°
13
63°
54°
14
65°
53°
15
65°
53°
16
64°
51°
17
63°
52°
18
60°
53°
19
61°
53°
20
64°
48°
21
62°
47°
22
59°
44°
23
55°
43°
24
55°
43°
25
57°
44°
26
56°
43°
27
54°
42°
28
54°
42°
29
53°
43°
30
53°
42°
1
54°
42°
2
54°
43°
3
55°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Upplands Vasby
Upplands Vasby's September 2026 forecast shows daily high temperatures ranging from 53° to 65°, with overnight lows between 42° and 54°. The average high for September is 60° with an average low of 48°. 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 Upplands Vasby. See also: October | November | December.
