S
M
T
W
T
F
S
29
67°
41°
30
66°
40°
31
63°
43°
1
57°
41°
2
45°
30°
3
51°
30°
4
57°
26°
5
64°
25°
6
68°
26°
7
70°
36°
8
65°
39°
9
68°
36°
10
76°
35°
11
59°
42°
12
63°
29°
13
51°
37°
14
54°
35°
15
53°
42°
16
43°
26°
17
40°
22°
18
54°
26°
19
68°
35°
20
75°
38°
21
78°
42°
22
57°
38°
23
51°
35°
24
58°
28°
25
62°
36°
26
61°
38°
27
62°
39°
28
66°
41°
29
67°
42°
30
73°
37°
1
54°
29°
2
59°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Idaho Falls
Idaho Falls's April 2026 forecast shows daily high temperatures ranging from 40° to 78°, with overnight lows between 22° and 42°. The average high for April is 62° with an average low of 35°. 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 Idaho Falls. See also: May | June | July.
