S
M
T
W
T
F
S
29
28°
11°
30
35°
12°
31
41°
24°
1
27°
11°
2
32°
8°
3
35°
7°
4
31°
13°
5
30°
12°
6
45°
27°
7
38°
15°
8
35°
16°
9
39°
20°
10
42°
29°
11
44°
30°
12
38°
23°
13
39°
30°
14
38°
24°
15
38°
26°
16
39°
29°
17
44°
28°
18
40°
26°
19
42°
41°
20
41°
32°
21
41°
31°
22
42°
31°
23
41°
30°
24
41°
30°
25
45°
34°
26
43°
34°
27
45°
33°
28
44°
33°
29
43°
32°
30
44°
32°
1
44°
30°
2
43°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lethbridge
Lethbridge's April 2026 forecast shows daily high temperatures ranging from 35° to 45°, with overnight lows between 15° and 41°. The average high for April is 41° with an average low of 29°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Lethbridge. See also: May | June | July.