S
M
T
W
T
F
S
30
107°
78°
31
105°
72°
1
103°
70°
2
104°
75°
3
103°
79°
4
101°
73°
5
102°
76°
6
101°
72°
7
104°
73°
8
104°
75°
9
92°
68°
10
88°
66°
11
94°
69°
12
88°
69°
13
96°
70°
14
97°
61°
15
77°
57°
16
80°
58°
17
77°
57°
18
76°
56°
19
78°
54°
20
75°
57°
21
81°
56°
22
87°
62°
23
86°
62°
24
83°
61°
25
74°
61°
26
80°
60°
27
80°
61°
28
81°
61°
29
76°
59°
30
82°
49°
1
69°
46°
2
69°
45°
3
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in McPherson
McPherson's September 2026 forecast shows daily high temperatures ranging from 68° to 104°, with overnight lows between 45° and 75°. The average high for September is 82° with an average low of 59°. 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 McPherson. See also: October | November | December.