S
M
T
W
T
F
S
30
102°
79°
31
102°
76°
1
100°
75°
2
103°
77°
3
97°
75°
4
100°
77°
5
101°
74°
6
102°
75°
7
102°
75°
8
103°
77°
9
99°
75°
10
98°
75°
11
99°
77°
12
103°
76°
13
99°
76°
14
99°
74°
15
96°
70°
16
92°
69°
17
90°
67°
18
90°
66°
19
89°
64°
20
84°
63°
21
87°
62°
22
92°
68°
23
91°
67°
24
85°
66°
25
81°
66°
26
86°
65°
27
86°
65°
28
88°
64°
29
87°
65°
30
86°
57°
1
78°
53°
2
77°
52°
3
77°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Glen Rose
Glen Rose's September 2026 forecast shows daily high temperatures ranging from 77° to 103°, with overnight lows between 52° and 77°. The average high for September is 90° with an average low of 67°. 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 Glen Rose. See also: October | November | December.