S
M
T
W
T
F
S
26
55°
40°
27
55°
37°
28
56°
35°
29
54°
38°
30
54°
38°
1
55°
38°
2
55°
36°
3
54°
35°
4
53°
35°
5
54°
36°
6
54°
36°
7
55°
37°
8
54°
41°
9
57°
42°
10
56°
41°
11
56°
39°
12
57°
37°
13
56°
40°
14
57°
41°
15
62°
40°
16
63°
43°
17
62°
43°
18
63°
44°
19
64°
44°
20
60°
43°
21
58°
43°
22
61°
44°
23
62°
42°
24
60°
42°
25
64°
43°
26
65°
45°
27
65°
40°
28
61°
45°
29
61°
44°
30
63°
41°
31
61°
45°
1
63°
45°
2
65°
40°
3
61°
42°
4
61°
43°
5
62°
40°
6
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Collin
Collin's May 2026 forecast shows daily high temperatures ranging from 53° to 65°, with overnight lows between 35° and 45°. The average high for May is 59° with an average low of 41°. 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 Collin. See also: June | July | August.