S
M
T
W
T
F
S
30
68°
54°
31
70°
50°
1
69°
49°
2
68°
54°
3
68°
48°
4
72°
48°
5
68°
49°
6
69°
50°
7
71°
51°
8
70°
53°
9
71°
50°
10
68°
53°
11
69°
53°
12
68°
52°
13
71°
52°
14
70°
51°
15
70°
51°
16
69°
50°
17
66°
52°
18
65°
51°
19
67°
45°
20
63°
46°
21
64°
44°
22
63°
45°
23
64°
50°
24
66°
51°
25
64°
52°
26
66°
51°
27
66°
50°
28
65°
49°
29
62°
47°
30
61°
45°
1
60°
43°
2
60°
43°
3
62°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Underwood
Underwood's September 2026 forecast shows daily high temperatures ranging from 60° to 72°, with overnight lows between 43° and 54°. The average high for September is 67° with an average low of 49°. 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 Underwood. See also: October | November | December.
