S
M
T
W
T
F
S
26
59°
34°
27
61°
33°
28
65°
36°
29
68°
48°
30
70°
43°
1
74°
48°
2
80°
52°
3
81°
49°
4
81°
49°
5
79°
50°
6
78°
47°
7
78°
51°
8
77°
49°
9
76°
45°
10
89°
52°
11
84°
54°
12
96°
55°
13
79°
53°
14
74°
48°
15
71°
49°
16
62°
41°
17
58°
41°
18
68°
44°
19
71°
48°
20
76°
51°
21
81°
54°
22
83°
56°
23
82°
55°
24
77°
54°
25
80°
54°
26
80°
55°
27
76°
50°
28
69°
45°
29
72°
51°
30
69°
48°
31
74°
50°
1
81°
56°
2
80°
54°
3
81°
57°
4
76°
50°
5
69°
46°
6
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boise Hills
Boise Hills's May 2026 forecast shows daily high temperatures ranging from 58° to 83°, with overnight lows between 41° and 57°. The average high for May is 74° with an average low of 50°. 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 Boise Hills. See also: June | July | August.