S
M
T
W
T
F
S
29
79°
51°
30
81°
46°
31
61°
38°
1
59°
39°
2
72°
35°
3
55°
32°
4
61°
27°
5
68°
35°
6
68°
35°
7
71°
29°
8
71°
46°
9
72°
37°
10
71°
34°
11
76°
48°
12
77°
43°
13
73°
46°
14
62°
40°
15
69°
37°
16
76°
38°
17
56°
29°
18
58°
26°
19
71°
32°
20
78°
41°
21
84°
45°
22
83°
56°
23
63°
36°
24
73°
35°
25
54°
31°
26
55°
36°
27
54°
36°
28
59°
37°
29
53°
39°
30
45°
35°
1
51°
31°
2
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Peoria
Peoria's April 2026 forecast shows daily high temperatures ranging from 45° to 66°, with overnight lows between 31° and 41°. The average high for April is 55° 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 Peoria. See also: May | June | July.