S
M
T
W
T
F
S
30
82°
56°
31
83°
57°
1
83°
53°
2
80°
54°
3
79°
60°
4
83°
61°
5
86°
60°
6
86°
54°
7
79°
53°
8
78°
56°
9
81°
58°
10
78°
58°
11
80°
59°
12
78°
57°
13
79°
51°
14
76°
49°
15
75°
49°
16
76°
50°
17
76°
54°
18
79°
56°
19
82°
57°
20
83°
55°
21
79°
54°
22
81°
56°
23
79°
47°
24
82°
46°
25
73°
45°
26
72°
48°
27
80°
53°
28
78°
52°
29
79°
53°
30
Hist. Avg.
74°
47°
1
Hist. Avg.
74°
47°
2
Hist. Avg.
73°
46°
3
Hist. Avg.
73°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mansfield
Mansfield's September 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 45° and 61°. The average high for September is 80° with an average low of 54°. 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 Mansfield. See also: October | November | December.