S
M
T
W
T
F
S
29
78°
46°
30
83°
62°
31
78°
68°
1
74°
62°
2
77°
60°
3
75°
50°
4
58°
39°
5
63°
35°
6
70°
36°
7
72°
49°
8
76°
51°
9
76°
56°
10
68°
58°
11
79°
62°
12
71°
62°
13
75°
62°
14
72°
44°
15
65°
43°
16
67°
48°
17
72°
55°
18
74°
57°
19
75°
58°
20
69°
45°
21
72°
53°
22
74°
48°
23
63°
51°
24
73°
50°
25
71°
53°
26
73°
53°
27
72°
52°
28
71°
53°
29
69°
53°
30
65°
51°
1
66°
53°
2
65°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Irwin
Irwin's April 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 43° and 62°. The average high for April is 71° with an average low of 53°. 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 Irwin. See also: May | June | July.