S
M
T
W
T
F
S
30
82°
66°
31
88°
61°
1
82°
56°
2
84°
63°
3
88°
63°
4
89°
67°
5
88°
63°
6
87°
60°
7
75°
58°
8
77°
55°
9
76°
53°
10
76°
51°
11
74°
53°
12
76°
51°
13
71°
52°
14
68°
51°
15
77°
55°
16
75°
55°
17
76°
56°
18
76°
54°
19
74°
54°
20
75°
55°
21
76°
53°
22
75°
53°
23
74°
54°
24
76°
56°
25
76°
54°
26
74°
54°
27
75°
53°
28
75°
52°
29
74°
51°
30
73°
53°
1
74°
52°
2
72°
50°
3
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Glyndon
Glyndon's September 2026 forecast shows daily high temperatures ranging from 68° to 89°, with overnight lows between 50° and 67°. The average high for September is 77° with an average low of 55°. 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 Glyndon. See also: October | November | December.
