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
54°
43°
20
55°
42°
21
56°
44°
22
55°
36°
23
52°
31°
24
55°
34°
25
57°
39°
26
56°
45°
27
55°
39°
28
56°
38°
29
55°
36°
30
38°
34°
1
37°
30°
2
46°
31°
3
48°
39°
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 48° to 48°, with overnight lows between 39° and 39°. The average high for September is 48° 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.
