S
M
T
W
T
F
S
26
85°
61°
27
86°
61°
28
76°
67°
29
81°
65°
30
73°
60°
1
65°
57°
2
72°
48°
3
74°
44°
4
81°
46°
5
79°
53°
6
80°
67°
7
74°
59°
8
68°
54°
9
77°
60°
10
81°
59°
11
80°
63°
12
81°
59°
13
83°
55°
14
80°
54°
15
82°
50°
16
85°
56°
17
88°
58°
18
89°
64°
19
91°
71°
20
90°
70°
21
86°
71°
22
76°
69°
23
86°
68°
24
81°
69°
25
79°
70°
26
80°
70°
27
84°
71°
28
85°
71°
29
81°
69°
30
83°
67°
31
84°
64°
1
82°
62°
2
83°
64°
3
81°
63°
4
79°
60°
5
83°
65°
6
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Reform
Reform's May 2026 forecast shows daily high temperatures ranging from 79° to 85°, with overnight lows between 60° and 71°. The average high for May is 83° with an average low of 66°. 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 Reform. See also: June | July | August.