S
M
T
W
T
F
S
30
75°
56°
31
75°
65°
1
73°
63°
2
72°
64°
3
80°
58°
4
77°
55°
5
70°
51°
6
74°
50°
7
75°
57°
8
71°
56°
9
73°
54°
10
75°
55°
11
76°
51°
12
71°
49°
13
73°
49°
14
71°
49°
15
67°
48°
16
69°
54°
17
74°
48°
18
65°
44°
19
66°
44°
20
70°
50°
21
74°
53°
22
75°
54°
23
75°
52°
24
73°
49°
25
72°
50°
26
72°
50°
27
73°
51°
28
73°
49°
29
71°
44°
30
62°
41°
1
60°
40°
2
65°
48°
3
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Galway
Galway's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 40° and 65°. The average high for September is 72° 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 Galway. See also: October | November | December.
