S
M
T
W
T
F
S
30
81°
56°
31
78°
53°
1
75°
54°
2
75°
54°
3
76°
55°
4
76°
54°
5
73°
55°
6
73°
60°
7
74°
59°
8
79°
55°
9
73°
53°
10
73°
53°
11
72°
54°
12
73°
55°
13
72°
54°
14
71°
52°
15
72°
58°
16
73°
52°
17
75°
51°
18
74°
51°
19
70°
58°
20
74°
54°
21
69°
49°
22
68°
46°
23
Hist. Avg.
72°
51°
24
Hist. Avg.
72°
51°
25
Hist. Avg.
72°
50°
26
Hist. Avg.
71°
50°
27
Hist. Avg.
71°
50°
28
Hist. Avg.
70°
49°
29
Hist. Avg.
70°
49°
30
Hist. Avg.
70°
48°
1
Hist. Avg.
69°
48°
2
Hist. Avg.
69°
48°
3
Hist. Avg.
68°
48°
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 68° to 81°, with overnight lows between 46° and 60°. The average high for September is 74° 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.