S
M
T
W
T
F
S
30
79°
63°
31
75°
61°
1
75°
55°
2
75°
55°
3
77°
59°
4
82°
59°
5
77°
59°
6
83°
63°
7
84°
62°
8
87°
62°
9
66°
53°
10
66°
53°
11
70°
52°
12
71°
54°
13
62°
46°
14
62°
49°
15
65°
46°
16
66°
47°
17
64°
49°
18
63°
48°
19
62°
46°
20
64°
47°
21
68°
47°
22
69°
48°
23
70°
51°
24
71°
49°
25
71°
51°
26
70°
52°
27
69°
49°
28
69°
50°
29
68°
47°
30
69°
48°
1
63°
45°
2
66°
46°
3
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sargans
Sargans's September 2026 forecast shows daily high temperatures ranging from 62° to 87°, with overnight lows between 44° and 63°. The average high for September is 69° with an average low of 50°. 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 Sargans. See also: October | November | December.
