S
M
T
W
T
F
S
26
62°
41°
27
59°
45°
28
62°
46°
29
52°
36°
30
49°
32°
1
45°
29°
2
59°
28°
3
68°
48°
4
77°
44°
5
56°
33°
6
54°
32°
7
56°
32°
8
67°
31°
9
63°
40°
10
60°
30°
11
55°
33°
12
75°
35°
13
60°
39°
14
68°
33°
15
78°
46°
16
82°
57°
17
61°
50°
18
72°
60°
19
72°
52°
20
59°
44°
21
57°
42°
22
64°
46°
23
67°
54°
24
79°
54°
25
83°
57°
26
84°
57°
27
80°
55°
28
75°
50°
29
77°
48°
30
67°
50°
31
70°
51°
1
75°
52°
2
74°
53°
3
76°
53°
4
75°
55°
5
73°
52°
6
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Theresa
Theresa's May 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 48° and 58°. The average high for May is 75° with an average low of 53°. 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 Theresa. See also: June | July | August.
