S
M
T
W
T
F
S
26
77°
55°
27
72°
52°
28
68°
48°
29
81°
57°
30
73°
59°
1
64°
55°
2
59°
50°
3
68°
43°
4
79°
46°
5
81°
54°
6
84°
59°
7
77°
59°
8
72°
50°
9
72°
55°
10
82°
59°
11
79°
59°
12
70°
52°
13
79°
46°
14
77°
54°
15
77°
45°
16
86°
54°
17
90°
66°
18
90°
66°
19
90°
63°
20
91°
64°
21
91°
64°
22
88°
64°
23
75°
63°
24
81°
61°
25
82°
68°
26
82°
67°
27
83°
67°
28
86°
67°
29
83°
64°
30
69°
58°
31
72°
55°
1
70°
57°
2
74°
58°
3
76°
59°
4
77°
63°
5
80°
64°
6
83°
64°
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 69° to 86°, with overnight lows between 55° and 68°. The average high for May is 78° with an average low of 62°. 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.
