S
M
T
W
T
F
S
30
86°
63°
31
86°
63°
1
85°
62°
2
87°
64°
3
87°
64°
4
86°
63°
5
86°
62°
6
85°
63°
7
86°
60°
8
77°
58°
9
82°
58°
10
83°
59°
11
84°
59°
12
82°
58°
13
77°
54°
14
69°
52°
15
70°
55°
16
72°
54°
17
71°
50°
18
70°
48°
19
78°
53°
20
77°
54°
21
76°
53°
22
77°
52°
23
80°
49°
24
73°
53°
25
69°
53°
26
73°
47°
27
78°
39°
28
68°
44°
29
70°
49°
30
70°
45°
1
72°
51°
2
72°
53°
3
78°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Le Mars
West Le Mars's September 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 39° and 64°. The average high for September is 78° 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 West Le Mars. See also: October | November | December.