S
M
T
W
T
F
S
26
51°
28°
27
49°
29°
28
55°
27°
29
59°
27°
30
61°
30°
1
66°
28°
2
72°
28°
3
75°
33°
4
75°
34°
5
65°
39°
6
66°
27°
7
74°
47°
8
75°
35°
9
69°
36°
10
78°
34°
11
84°
38°
12
86°
36°
13
88°
43°
14
69°
41°
15
69°
45°
16
63°
38°
17
53°
31°
18
56°
28°
19
62°
24°
20
67°
33°
21
61°
34°
22
68°
31°
23
78°
34°
24
82°
49°
25
82°
44°
26
71°
48°
27
84°
46°
28
86°
43°
29
80°
46°
30
58°
47°
31
65°
41°
1
73°
37°
2
76°
36°
3
80°
40°
4
79°
46°
5
85°
45°
6
82°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Idaho Falls West
Idaho Falls West's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Idaho Falls West. See also: June | July | August.
