S
M
T
W
T
F
S
29
44°
27°
30
54°
30°
31
46°
35°
1
42°
29°
2
43°
29°
3
69°
39°
4
53°
35°
5
51°
34°
6
43°
30°
7
34°
23°
8
42°
18°
9
53°
32°
10
45°
33°
11
49°
30°
12
49°
30°
13
62°
42°
14
65°
38°
15
55°
45°
16
56°
48°
17
61°
41°
18
62°
40°
19
46°
27°
20
39°
29°
21
45°
37°
22
50°
37°
23
51°
35°
24
51°
40°
25
55°
39°
26
54°
43°
27
54°
42°
28
53°
38°
29
58°
44°
30
52°
41°
1
50°
40°
2
54°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Frontenac Islands
Frontenac Islands's April 2026 forecast shows daily high temperatures ranging from 39° to 62°, with overnight lows between 27° and 48°. The average high for April is 53° with an average low of 39°. 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 Frontenac Islands. See also: May | June | July.