S
M
T
W
T
F
S
26
59°
34°
27
54°
30°
28
52°
28°
29
49°
36°
30
50°
36°
1
50°
40°
2
61°
40°
3
45°
38°
4
59°
41°
5
64°
47°
6
62°
48°
7
58°
49°
8
56°
41°
9
57°
40°
10
54°
43°
11
54°
42°
12
54°
39°
13
54°
40°
14
53°
36°
15
54°
43°
16
55°
41°
17
55°
41°
18
56°
44°
19
56°
44°
20
58°
45°
21
63°
45°
22
58°
44°
23
57°
43°
24
56°
43°
25
58°
46°
26
59°
46°
27
58°
44°
28
59°
42°
29
58°
46°
30
59°
45°
31
58°
44°
1
59°
45°
2
59°
45°
3
60°
44°
4
59°
44°
5
60°
45°
6
60°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Renfrew
Renfrew's May 2026 forecast shows daily high temperatures ranging from 45° to 64°, with overnight lows between 36° and 49°. The average high for May is 57° with an average low of 43°. 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 Renfrew. See also: June | July | August.