S
M
T
W
T
F
S
29
48°
28°
30
61°
45°
31
53°
38°
1
40°
33°
2
41°
40°
3
62°
34°
4
61°
44°
5
48°
32°
6
41°
27°
7
38°
21°
8
44°
38°
9
58°
37°
10
56°
36°
11
57°
44°
12
56°
44°
13
58°
39°
14
53°
40°
15
54°
34°
16
49°
27°
17
46°
27°
18
47°
30°
19
49°
32°
20
60°
42°
21
62°
42°
22
61°
43°
23
62°
43°
24
64°
42°
25
65°
43°
26
63°
42°
27
58°
38°
28
52°
37°
29
53°
39°
30
55°
41°
1
54°
37°
2
55°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Frontenac
Frontenac's April 2026 forecast shows daily high temperatures ranging from 38° to 65°, with overnight lows between 21° and 44°. The average high for April is 54° with an average low of 37°. 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. See also: May | June | July.