S
M
T
W
T
F
S
26
65°
40°
27
65°
42°
28
71°
45°
29
63°
49°
30
55°
38°
1
49°
36°
2
50°
34°
3
52°
36°
4
56°
33°
5
68°
42°
6
51°
43°
7
52°
40°
8
52°
40°
9
62°
43°
10
60°
45°
11
53°
40°
12
54°
36°
13
55°
39°
14
53°
46°
15
65°
48°
16
68°
52°
17
65°
51°
18
63°
47°
19
82°
50°
20
76°
45°
21
58°
40°
22
68°
39°
23
68°
45°
24
61°
51°
25
64°
51°
26
76°
56°
27
68°
52°
28
62°
50°
29
56°
45°
30
61°
48°
31
62°
48°
1
66°
53°
2
68°
52°
3
72°
54°
4
73°
57°
5
71°
57°
6
68°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Trois-Rivières
Trois-Rivières's May 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 45° and 57°. The average high for May is 66° with an average low of 52°. 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 Trois-Rivières. See also: June | July | August.