S
M
T
W
T
F
S
30
93°
71°
31
95°
70°
1
97°
69°
2
98°
70°
3
99°
71°
4
100°
72°
5
100°
71°
6
101°
75°
7
94°
73°
8
94°
73°
9
95°
71°
10
96°
67°
11
93°
68°
12
92°
72°
13
95°
69°
14
97°
70°
15
97°
71°
16
95°
73°
17
96°
70°
18
99°
70°
19
100°
69°
20
97°
71°
21
99°
73°
22
92°
69°
23
77°
67°
24
83°
64°
25
85°
61°
26
84°
60°
27
82°
58°
28
86°
63°
29
88°
70°
30
88°
71°
1
81°
63°
2
80°
59°
3
83°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Underwood-Petersville
Underwood-Petersville's September 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 58° and 71°. The average high for September is 84° with an average low of 63°. 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-Petersville. See also: October | November | December.
