S
M
T
W
T
F
S
26
84°
63°
27
90°
63°
28
82°
57°
29
64°
54°
30
68°
54°
1
72°
50°
2
77°
50°
3
84°
59°
4
83°
66°
5
85°
58°
6
70°
44°
7
74°
52°
8
85°
57°
9
84°
62°
10
82°
58°
11
84°
59°
12
87°
64°
13
85°
63°
14
89°
59°
15
81°
60°
16
76°
64°
17
77°
63°
18
77°
64°
19
79°
65°
20
80°
64°
21
84°
58°
22
77°
57°
23
77°
58°
24
78°
61°
25
78°
58°
26
77°
58°
27
79°
59°
28
80°
60°
29
80°
65°
30
79°
65°
31
81°
66°
1
81°
63°
2
82°
64°
3
85°
69°
4
85°
69°
5
83°
68°
6
82°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Simpson
Simpson's May 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 44° and 69°. The average high for May is 81° with an average low of 61°. 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 Simpson. See also: June | July | August.
