S
M
T
W
T
F
S
30
78°
57°
31
78°
56°
1
77°
57°
2
78°
53°
3
75°
48°
4
68°
46°
5
68°
55°
6
69°
56°
7
75°
55°
8
75°
55°
9
76°
53°
10
71°
50°
11
74°
52°
12
74°
55°
13
73°
55°
14
74°
52°
15
73°
47°
16
68°
43°
17
65°
50°
18
68°
45°
19
66°
42°
20
67°
41°
21
60°
39°
22
60°
48°
23
62°
44°
24
61°
40°
25
59°
38°
26
59°
41°
27
60°
47°
28
67°
39°
29
66°
38°
30
58°
41°
1
59°
40°
2
59°
36°
3
57°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in The Nation
The Nation's September 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 36° and 57°. The average high for September is 68° with an average low of 47°. 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 The Nation. See also: October | November | December.
