S
M
T
W
T
F
S
26
67°
35°
27
61°
36°
28
64°
46°
29
69°
37°
30
79°
39°
1
69°
44°
2
71°
48°
3
89°
45°
4
72°
48°
5
68°
51°
6
68°
51°
7
72°
49°
8
70°
43°
9
78°
41°
10
73°
48°
11
78°
45°
12
74°
46°
13
65°
44°
14
66°
44°
15
61°
38°
16
61°
43°
17
65°
39°
18
72°
42°
19
73°
38°
20
72°
49°
21
84°
46°
22
82°
49°
23
77°
50°
24
81°
46°
25
56°
48°
26
60°
46°
27
70°
47°
28
76°
53°
29
67°
40°
30
67°
39°
31
71°
42°
1
79°
45°
2
82°
46°
3
77°
49°
4
76°
48°
5
74°
48°
6
75°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Alsea
Alsea's May 2026 forecast shows daily high temperatures ranging from 56° to 82°, with overnight lows between 39° and 53°. The average high for May is 72° with an average low of 46°. 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 Alsea. See also: June | July | August.