S
M
T
W
T
F
S
30
84°
67°
31
91°
71°
1
94°
71°
2
92°
69°
3
94°
73°
4
94°
72°
5
88°
66°
6
82°
61°
7
80°
62°
8
88°
69°
9
89°
60°
10
78°
57°
11
80°
58°
12
82°
60°
13
85°
58°
14
86°
59°
15
81°
58°
16
80°
56°
17
81°
57°
18
76°
51°
19
73°
57°
20
79°
56°
21
77°
56°
22
74°
55°
23
75°
55°
24
78°
54°
25
79°
56°
26
79°
56°
27
78°
55°
28
79°
57°
29
78°
56°
30
76°
55°
1
74°
50°
2
64°
44°
3
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Galva
Galva's September 2026 forecast shows daily high temperatures ranging from 63° to 89°, with overnight lows between 41° and 69°. The average high for September is 79° with an average low of 56°. 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 Galva. See also: October | November | December.