S
M
T
W
T
F
S
30
84°
61°
31
87°
63°
1
89°
64°
2
86°
63°
3
88°
56°
4
83°
55°
5
81°
57°
6
83°
62°
7
87°
61°
8
84°
60°
9
80°
59°
10
82°
60°
11
86°
61°
12
87°
60°
13
86°
60°
14
86°
59°
15
85°
59°
16
85°
58°
17
84°
53°
18
78°
50°
19
76°
48°
20
76°
48°
21
74°
47°
22
75°
49°
23
75°
48°
24
79°
48°
25
78°
54°
26
79°
53°
27
80°
54°
28
80°
52°
29
79°
51°
30
79°
50°
1
75°
49°
2
78°
52°
3
72°
45°
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 72° to 89°, with overnight lows between 45° and 64°. The average high for September is 81° with an average low of 55°. 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.
