S
M
T
W
T
F
S
26
67°
34°
27
61°
37°
28
63°
42°
29
66°
33°
30
75°
37°
1
71°
48°
2
67°
47°
3
83°
44°
4
67°
53°
5
67°
50°
6
71°
48°
7
71°
49°
8
69°
45°
9
75°
37°
10
71°
45°
11
76°
43°
12
77°
47°
13
66°
43°
14
70°
42°
15
66°
39°
16
53°
40°
17
61°
39°
18
70°
41°
19
74°
44°
20
76°
46°
21
76°
44°
22
73°
43°
23
74°
46°
24
68°
47°
25
68°
43°
26
63°
45°
27
67°
47°
28
65°
46°
29
68°
45°
30
63°
40°
31
65°
44°
1
72°
50°
2
74°
51°
3
73°
50°
4
72°
48°
5
69°
45°
6
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Willamette City
Willamette City's May 2026 forecast shows daily high temperatures ranging from 53° to 76°, with overnight lows between 39° and 51°. The average high for May is 69° with an average low of 45°. 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 Willamette City. See also: June | July | August.
