S
M
T
W
T
F
S
26
64°
40°
27
64°
37°
28
63°
42°
29
70°
42°
30
75°
43°
1
80°
44°
2
83°
51°
3
83°
50°
4
82°
49°
5
80°
51°
6
82°
51°
7
77°
54°
8
76°
48°
9
75°
49°
10
82°
50°
11
78°
50°
12
89°
57°
13
75°
53°
14
75°
49°
15
68°
47°
16
71°
45°
17
76°
47°
18
76°
48°
19
72°
50°
20
71°
49°
21
73°
49°
22
74°
50°
23
71°
49°
24
72°
52°
25
68°
48°
26
68°
46°
27
65°
46°
28
67°
45°
29
69°
49°
30
72°
55°
31
69°
48°
1
69°
49°
2
70°
50°
3
75°
52°
4
80°
57°
5
79°
58°
6
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Forebay
Forebay's May 2026 forecast shows daily high temperatures ranging from 65° to 89°, with overnight lows between 45° and 58°. The average high for May is 73° 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 Forebay. See also: June | July | August.