S
M
T
W
T
F
S
26
59°
38°
27
63°
42°
28
59°
40°
29
65°
43°
30
59°
43°
1
61°
42°
2
58°
43°
3
59°
42°
4
61°
42°
5
67°
44°
6
59°
43°
7
63°
44°
8
62°
44°
9
65°
43°
10
59°
41°
11
59°
40°
12
58°
38°
13
60°
40°
14
61°
40°
15
61°
43°
16
60°
41°
17
60°
39°
18
61°
38°
19
64°
42°
20
70°
46°
21
71°
46°
22
65°
45°
23
61°
41°
24
61°
38°
25
62°
43°
26
68°
42°
27
72°
47°
28
73°
48°
29
74°
49°
30
72°
48°
31
67°
44°
1
71°
45°
2
72°
47°
3
73°
47°
4
74°
42°
5
73°
47°
6
74°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Triangle Lake
Triangle Lake's May 2026 forecast shows daily high temperatures ranging from 58° to 74°, with overnight lows between 38° and 49°. The average high for May is 65° with an average low of 43°. 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 Triangle Lake. See also: June | July | August.
