S
M
T
W
T
F
S
30
80°
55°
31
84°
46°
1
80°
59°
2
84°
55°
3
83°
53°
4
88°
54°
5
88°
55°
6
88°
54°
7
79°
54°
8
83°
44°
9
82°
45°
10
87°
45°
11
85°
53°
12
77°
44°
13
88°
50°
14
75°
51°
15
69°
39°
16
80°
46°
17
77°
53°
18
75°
50°
19
69°
46°
20
63°
46°
21
69°
45°
22
74°
45°
23
73°
48°
24
75°
45°
25
76°
48°
26
81°
51°
27
74°
49°
28
63°
49°
29
71°
43°
30
75°
46°
1
70°
47°
2
80°
50°
3
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lander
Lander's September 2026 forecast shows daily high temperatures ranging from 72° to 80°, with overnight lows between 44° and 50°. The average high for September is 76° with an average low of 47°. 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 Lander. See also: October | November | December.