S
M
T
W
T
F
S
30
67°
42°
31
77°
50°
1
85°
43°
2
82°
50°
3
73°
49°
4
71°
40°
5
60°
49°
6
63°
51°
7
57°
50°
8
66°
52°
9
76°
51°
10
77°
50°
11
59°
47°
12
58°
41°
13
58°
35°
14
61°
44°
15
52°
47°
16
65°
44°
17
72°
43°
18
70°
37°
19
72°
39°
20
77°
44°
21
81°
48°
22
75°
44°
23
68°
41°
24
N/A
25
86°
44°
26
60°
31°
27
60°
26°
28
69°
30°
29
70°
48°
30
58°
36°
1
60°
35°
2
71°
43°
3
68°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lethbridge
Lethbridge's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Lethbridge. See also: October | November | December.
