S
M
T
W
T
F
S
31
82°
72°
1
89°
69°
2
91°
66°
3
91°
67°
4
101°
64°
5
98°
69°
6
80°
62°
7
81°
65°
8
84°
63°
9
88°
58°
10
91°
61°
11
93°
60°
12
93°
65°
13
92°
65°
14
92°
66°
15
94°
69°
16
93°
64°
17
92°
65°
18
93°
66°
19
94°
67°
20
94°
66°
21
95°
67°
22
96°
71°
23
97°
71°
24
84°
67°
25
84°
63°
26
87°
60°
27
88°
59°
28
86°
59°
29
84°
59°
30
87°
65°
1
91°
60°
2
91°
64°
3
91°
66°
4
87°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stephenville
Stephenville's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Stephenville. See also: October | November | December.
