S
M
T
W
T
F
S
26
67°
45°
27
66°
47°
28
61°
46°
29
57°
43°
30
55°
34°
1
51°
34°
2
52°
30°
3
63°
35°
4
77°
45°
5
57°
44°
6
56°
36°
7
57°
40°
8
63°
47°
9
69°
47°
10
58°
37°
11
53°
37°
12
53°
44°
13
64°
49°
14
68°
51°
15
71°
49°
16
65°
49°
17
62°
47°
18
69°
48°
19
70°
49°
20
64°
44°
21
65°
45°
22
64°
44°
23
65°
47°
24
66°
48°
25
66°
48°
26
67°
49°
27
69°
48°
28
69°
50°
29
73°
54°
30
76°
55°
31
77°
57°
1
75°
54°
2
71°
53°
3
77°
58°
4
79°
59°
5
79°
60°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Three Rivers
Three Rivers's May 2026 forecast shows daily high temperatures ranging from 53° to 79°, with overnight lows between 36° and 60°. The average high for May is 67° with an average low of 49°. 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 Three Rivers. See also: June | July | August.