S
M
T
W
T
F
S
26
67°
42°
27
58°
37°
28
55°
35°
29
49°
25°
30
42°
31°
1
47°
23°
2
59°
26°
3
68°
42°
4
64°
33°
5
45°
30°
6
43°
34°
7
51°
28°
8
62°
27°
9
53°
32°
10
50°
24°
11
61°
37°
12
66°
36°
13
62°
31°
14
70°
43°
15
82°
51°
16
82°
40°
17
56°
40°
18
76°
53°
19
62°
40°
20
61°
33°
21
62°
42°
22
69°
48°
23
69°
44°
24
76°
49°
25
85°
58°
26
88°
54°
27
82°
46°
28
83°
48°
29
90°
60°
30
81°
43°
31
79°
45°
1
85°
48°
2
84°
52°
3
85°
59°
4
84°
63°
5
82°
59°
6
84°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boulder Junction
Boulder Junction'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 Boulder Junction. See also: June | July | August.
