S
M
T
W
T
F
S
26
65°
37°
27
70°
39°
28
68°
42°
29
64°
47°
30
54°
40°
1
56°
35°
2
50°
33°
3
53°
33°
4
69°
38°
5
78°
49°
6
55°
42°
7
54°
36°
8
52°
37°
9
49°
35°
10
60°
41°
11
56°
33°
12
58°
32°
13
57°
41°
14
56°
45°
15
63°
43°
16
77°
44°
17
81°
56°
18
88°
56°
19
N/A
20
70°
40°
21
61°
33°
22
65°
38°
23
56°
46°
24
58°
46°
25
61°
47°
26
73°
46°
27
74°
48°
28
73°
50°
29
70°
46°
30
72°
49°
31
74°
53°
1
71°
48°
2
64°
47°
3
62°
46°
4
63°
51°
5
66°
51°
6
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Speculator
Speculator's May 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 33° and 53°. The average high for May is 67° with an average low of 46°. 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 Speculator. See also: June | July | August.