S
M
T
W
T
F
S
30
79°
59°
31
80°
59°
1
82°
58°
2
74°
53°
3
74°
52°
4
75°
54°
5
77°
54°
6
81°
58°
7
82°
59°
8
82°
58°
9
81°
59°
10
81°
57°
11
80°
57°
12
81°
58°
13
82°
58°
14
79°
50°
15
69°
50°
16
71°
52°
17
74°
51°
18
69°
48°
19
70°
43°
20
70°
46°
21
77°
51°
22
77°
52°
23
76°
43°
24
69°
45°
25
70°
46°
26
74°
52°
27
74°
51°
28
75°
43°
29
66°
40°
30
65°
42°
1
65°
45°
2
72°
44°
3
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Boardman
Boardman's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 40° and 59°. The average high for September is 75° with an average low of 51°. 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 Boardman. See also: October | November | December.