S
M
T
W
T
F
S
31
87°
48°
1
90°
47°
2
75°
51°
3
77°
46°
4
64°
42°
5
75°
35°
6
85°
41°
7
87°
48°
8
80°
49°
9
84°
43°
10
70°
47°
11
78°
42°
12
83°
42°
13
82°
45°
14
83°
48°
15
68°
52°
16
76°
46°
17
82°
42°
18
81°
41°
19
79°
46°
20
87°
42°
21
82°
53°
22
71°
47°
23
86°
47°
24
73°
42°
25
89°
33°
26
71°
38°
27
78°
53°
28
64°
42°
29
87°
37°
30
74°
46°
1
67°
41°
2
65°
42°
3
69°
37°
4
56°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lethbridge
Lethbridge's September 2025 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.
