S
M
T
W
T
F
S
26
79°
57°
27
72°
56°
28
72°
53°
29
75°
58°
30
67°
49°
1
66°
46°
2
63°
44°
3
66°
35°
4
74°
36°
5
75°
43°
6
71°
61°
7
65°
50°
8
70°
43°
9
71°
46°
10
78°
49°
11
72°
51°
12
71°
52°
13
74°
45°
14
67°
45°
15
75°
38°
16
81°
46°
17
84°
54°
18
83°
57°
19
84°
57°
20
84°
55°
21
76°
63°
22
74°
64°
23
72°
64°
24
78°
64°
25
75°
67°
26
77°
65°
27
80°
62°
28
80°
63°
29
76°
58°
30
73°
57°
31
74°
54°
1
78°
59°
2
79°
58°
3
80°
60°
4
81°
56°
5
78°
59°
6
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Three Sisters Mountain
Three Sisters Mountain's May 2026 forecast shows daily high temperatures ranging from 72° to 81°, with overnight lows between 54° and 67°. The average high for May is 77° with an average low of 61°. 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 Three Sisters Mountain. See also: June | July | August.
