S
M
T
W
T
F
S
30
70°
59°
31
64°
57°
1
68°
55°
2
64°
59°
3
68°
60°
4
66°
58°
5
64°
54°
6
74°
59°
7
66°
55°
8
61°
53°
9
62°
52°
10
65°
57°
11
63°
53°
12
63°
52°
13
64°
53°
14
66°
54°
15
65°
55°
16
63°
55°
17
64°
53°
18
63°
51°
19
62°
53°
20
64°
55°
21
65°
55°
22
65°
54°
23
64°
54°
24
65°
52°
25
62°
49°
26
61°
48°
27
62°
47°
28
63°
48°
29
62°
52°
30
61°
49°
1
60°
52°
2
63°
51°
3
62°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tarleton
Tarleton's September 2026 forecast shows daily high temperatures ranging from 60° to 74°, with overnight lows between 47° and 59°. The average high for September is 64° with an average low of 53°. 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 Tarleton. See also: October | November | December.