S
M
T
W
T
F
S
26
66°
37°
27
59°
43°
28
55°
43°
29
63°
39°
30
66°
41°
1
68°
47°
2
69°
50°
3
75°
51°
4
75°
52°
5
71°
49°
6
70°
46°
7
64°
49°
8
64°
50°
9
67°
49°
10
71°
50°
11
67°
49°
12
68°
49°
13
64°
50°
14
69°
53°
15
67°
47°
16
64°
49°
17
61°
49°
18
61°
48°
19
64°
47°
20
64°
50°
21
61°
50°
22
62°
46°
23
66°
47°
24
70°
51°
25
72°
52°
26
72°
52°
27
67°
51°
28
68°
49°
29
68°
51°
30
71°
53°
31
67°
52°
1
63°
52°
2
66°
51°
3
67°
52°
4
63°
51°
5
65°
50°
6
70°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in La Conner
La Conner's May 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 46° and 53°. The average high for May is 67° 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 La Conner. See also: June | July | August.