S
M
T
W
T
F
S
30
76°
47°
31
79°
51°
1
84°
57°
2
87°
57°
3
86°
55°
4
75°
45°
5
76°
45°
6
77°
48°
7
78°
47°
8
80°
53°
9
77°
48°
10
77°
45°
11
76°
46°
12
77°
53°
13
75°
44°
14
73°
42°
15
73°
44°
16
74°
44°
17
74°
46°
18
76°
47°
19
81°
49°
20
82°
43°
21
75°
45°
22
73°
43°
23
69°
42°
24
70°
41°
25
68°
39°
26
70°
40°
27
69°
43°
28
72°
47°
29
76°
44°
30
67°
39°
1
68°
41°
2
Hist. Avg.
75°
44°
3
Hist. Avg.
74°
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 67° to 87°, with overnight lows between 39° and 57°. The average high for September is 75° with an average low of 46°. 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.
