S
M
T
W
T
F
S
26
65°
39°
27
69°
45°
28
69°
49°
29
73°
45°
30
76°
43°
1
78°
47°
2
81°
53°
3
85°
52°
4
86°
54°
5
84°
54°
6
84°
59°
7
81°
54°
8
74°
56°
9
77°
49°
10
76°
47°
11
78°
50°
12
83°
56°
13
78°
52°
14
73°
49°
15
67°
44°
16
64°
42°
17
68°
46°
18
70°
46°
19
72°
49°
20
71°
49°
21
69°
48°
22
70°
47°
23
64°
42°
24
65°
43°
25
65°
47°
26
63°
46°
27
64°
45°
28
65°
43°
29
66°
47°
30
68°
46°
31
67°
46°
1
67°
48°
2
69°
47°
3
73°
50°
4
77°
52°
5
76°
53°
6
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lake Chelan State Park
Lake Chelan State Park's May 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 42° and 56°. The average high for May is 70° with an average low of 48°. 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 Lake Chelan State Park. See also: June | July | August.
