S
M
T
W
T
F
S
26
54°
50°
27
57°
50°
28
52°
52°
29
52°
52°
30
57°
55°
1
57°
52°
2
57°
52°
3
57°
48°
4
59°
55°
5
59°
54°
6
57°
52°
7
59°
59°
8
60°
48°
9
63°
48°
10
63°
55°
11
63°
55°
12
61°
54°
13
55°
52°
14
61°
52°
15
52°
46°
16
57°
50°
17
62°
45°
18
64°
46°
19
66°
48°
20
65°
48°
21
66°
49°
22
62°
46°
23
64°
50°
24
61°
47°
25
62°
45°
26
60°
46°
27
63°
48°
28
62°
45°
29
63°
47°
30
62°
49°
31
59°
48°
1
65°
53°
2
66°
53°
3
65°
52°
4
65°
52°
5
63°
49°
6
66°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Coos Bay
Coos Bay's May 2026 forecast shows daily high temperatures ranging from 59° to 66°, with overnight lows between 45° and 54°. The average high for May is 63° with an average low of 49°. 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 Coos Bay. See also: June | July | August.
