S
M
T
W
T
F
S
30
83°
53°
31
83°
54°
1
86°
54°
2
84°
53°
3
77°
47°
4
75°
49°
5
79°
51°
6
80°
51°
7
82°
47°
8
82°
50°
9
84°
51°
10
83°
52°
11
82°
52°
12
81°
51°
13
80°
49°
14
76°
45°
15
78°
48°
16
76°
46°
17
75°
47°
18
74°
45°
19
69°
37°
20
69°
44°
21
76°
48°
22
76°
47°
23
Hist. Avg.
71°
42°
24
Hist. Avg.
70°
41°
25
Hist. Avg.
70°
41°
26
Hist. Avg.
69°
40°
27
Hist. Avg.
69°
40°
28
Hist. Avg.
68°
40°
29
Hist. Avg.
68°
39°
30
Hist. Avg.
67°
39°
1
Hist. Avg.
66°
38°
2
Hist. Avg.
66°
38°
3
Hist. Avg.
65°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lander
Lander's September 2026 forecast shows daily high temperatures ranging from 69° to 86°, with overnight lows between 37° and 54°. The average high for September is 79° with an average low of 49°. 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.