S
M
T
W
T
F
S
30
95°
74°
31
93°
73°
1
84°
75°
2
88°
75°
3
92°
74°
4
94°
72°
5
91°
74°
6
95°
71°
7
96°
75°
8
95°
73°
9
90°
74°
10
86°
71°
11
90°
72°
12
89°
73°
13
91°
75°
14
92°
71°
15
89°
70°
16
88°
69°
17
88°
69°
18
90°
70°
19
87°
69°
20
86°
66°
21
85°
72°
22
90°
71°
23
89°
72°
24
89°
72°
25
88°
71°
26
88°
71°
27
87°
70°
28
87°
70°
29
86°
71°
30
87°
70°
1
83°
64°
2
80°
63°
3
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Erath
Erath's September 2026 forecast shows daily high temperatures ranging from 80° to 95°, with overnight lows between 61° and 75°. The average high for September is 88° with an average low of 70°. 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 Erath. See also: October | November | December.