S
M
T
W
T
F
S
28
71°
53°
29
71°
56°
30
70°
56°
1
66°
49°
2
62°
48°
3
73°
50°
4
72°
52°
5
73°
49°
6
73°
51°
7
74°
56°
8
75°
58°
9
72°
55°
10
67°
56°
11
67°
52°
12
68°
51°
13
67°
55°
14
67°
60°
15
75°
56°
16
74°
58°
17
75°
59°
18
76°
55°
19
70°
57°
20
75°
50°
21
68°
50°
22
68°
51°
23
69°
50°
24
68°
49°
25
68°
51°
26
69°
50°
27
75°
58°
28
76°
53°
29
68°
50°
30
68°
50°
31
69°
51°
1
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Gallen
St. Gallen's July 2026 forecast shows daily high temperatures ranging from 62° to 76°, with overnight lows between 48° and 60°. The average high for July is 70° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in St. Gallen. See also: August | September | October.