S
M
T
W
T
F
S
30
84°
68°
31
84°
63°
1
82°
54°
2
84°
61°
3
90°
68°
4
84°
64°
5
84°
64°
6
79°
68°
7
79°
68°
8
86°
61°
9
75°
54°
10
82°
50°
11
82°
59°
12
68°
48°
13
66°
45°
14
61°
46°
15
68°
50°
16
70°
48°
17
70°
52°
18
63°
59°
19
64°
54°
20
66°
54°
21
63°
46°
22
64°
46°
23
68°
50°
24
63°
59°
25
64°
59°
26
62°
59°
27
73°
55°
28
68°
61°
29
65°
53°
30
70°
52°
1
67°
48°
2
66°
49°
3
63°
43°
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 62° to 73°, with overnight lows between 43° and 61°. The average high for September is 67° with an average low of 53°. 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.
