S
M
T
W
T
F
S
30
93°
72°
31
94°
73°
1
93°
74°
2
95°
73°
3
94°
74°
4
94°
73°
5
95°
72°
6
Hist. Avg.
95°
74°
7
Hist. Avg.
95°
74°
8
Hist. Avg.
95°
74°
9
Hist. Avg.
94°
74°
10
Hist. Avg.
94°
74°
11
Hist. Avg.
94°
73°
12
Hist. Avg.
94°
73°
13
Hist. Avg.
94°
73°
14
Hist. Avg.
93°
73°
15
Hist. Avg.
93°
72°
16
Hist. Avg.
93°
72°
17
Hist. Avg.
92°
72°
18
Hist. Avg.
92°
72°
19
Hist. Avg.
92°
72°
20
Hist. Avg.
92°
71°
21
Hist. Avg.
92°
71°
22
Hist. Avg.
91°
71°
23
Hist. Avg.
91°
70°
24
Hist. Avg.
91°
70°
25
Hist. Avg.
90°
70°
26
Hist. Avg.
90°
70°
27
Hist. Avg.
90°
70°
28
Hist. Avg.
90°
69°
29
Hist. Avg.
90°
69°
30
Hist. Avg.
89°
69°
1
Hist. Avg.
89°
68°
2
Hist. Avg.
89°
68°
3
Hist. Avg.
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mathis
Mathis's September 2026 forecast shows daily high temperatures ranging from 93° to 95°, with overnight lows between 72° and 74°. The average high for September is 94° with an average low of 73°. 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 Mathis. See also: October | November | December.