S
M
T
W
T
F
S
26
70°
42°
27
58°
42°
28
61°
49°
29
72°
46°
30
77°
48°
1
76°
53°
2
83°
57°
3
86°
60°
4
86°
57°
5
79°
53°
6
78°
53°
7
74°
51°
8
73°
53°
9
74°
52°
10
72°
51°
11
71°
50°
12
72°
50°
13
69°
49°
14
66°
45°
15
66°
47°
16
63°
47°
17
61°
48°
18
62°
49°
19
62°
46°
20
63°
49°
21
61°
48°
22
61°
44°
23
65°
46°
24
70°
48°
25
71°
51°
26
72°
51°
27
68°
49°
28
66°
47°
29
65°
48°
30
71°
52°
31
67°
51°
1
63°
51°
2
64°
49°
3
66°
51°
4
64°
51°
5
64°
49°
6
69°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chilliwack
Chilliwack's May 2026 forecast shows daily high temperatures ranging from 61° to 86°, with overnight lows between 44° and 60°. The average high for May is 69° 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 Chilliwack. See also: June | July | August.
