S
M
T
W
T
F
S
30
55°
41°
31
53°
38°
1
58°
33°
2
60°
37°
3
67°
42°
4
69°
45°
5
66°
49°
6
60°
46°
7
59°
51°
8
56°
48°
9
62°
44°
10
62°
42°
11
63°
42°
12
62°
45°
13
64°
43°
14
60°
39°
15
56°
47°
16
57°
44°
17
57°
41°
18
52°
46°
19
55°
43°
20
57°
44°
21
53°
38°
22
53°
38°
23
54°
36°
24
56°
44°
25
54°
41°
26
51°
40°
27
52°
40°
28
50°
39°
29
50°
40°
30
49°
39°
1
50°
37°
2
55°
39°
3
43°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gateway
Gateway's September 2026 forecast shows daily high temperatures ranging from 43° to 57°, with overnight lows between 29° and 44°. The average high for September is 52° with an average low of 39°. 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 Gateway. See also: October | November | December.
