S
M
T
W
T
F
S
30
86°
66°
31
87°
63°
1
86°
58°
2
82°
63°
3
82°
56°
4
76°
56°
5
78°
55°
6
81°
62°
7
82°
54°
8
76°
55°
9
78°
62°
10
76°
61°
11
82°
62°
12
84°
61°
13
84°
61°
14
85°
62°
15
84°
61°
16
73°
55°
17
74°
51°
18
74°
50°
19
Hist. Avg.
76°
52°
20
Hist. Avg.
76°
52°
21
Hist. Avg.
76°
51°
22
Hist. Avg.
75°
51°
23
Hist. Avg.
75°
50°
24
Hist. Avg.
74°
50°
25
Hist. Avg.
74°
50°
26
Hist. Avg.
73°
49°
27
Hist. Avg.
73°
49°
28
Hist. Avg.
73°
48°
29
Hist. Avg.
72°
48°
30
Hist. Avg.
72°
47°
1
Hist. Avg.
71°
47°
2
Hist. Avg.
71°
47°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Underwood
Underwood's September 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 50° and 66°. The average high for September is 81° with an average low of 59°. 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.
