S
M
T
W
T
F
S
26
29°
18°
27
46°
16°
28
56°
26°
29
59°
27°
30
67°
32°
1
73°
37°
2
65°
41°
3
74°
42°
4
55°
40°
5
48°
28°
6
71°
25°
7
71°
43°
8
74°
41°
9
66°
46°
10
80°
44°
11
65°
44°
12
78°
36°
13
82°
53°
14
65°
47°
15
62°
43°
16
64°
33°
17
46°
29°
18
56°
33°
19
63°
39°
20
58°
42°
21
69°
43°
22
61°
41°
23
69°
44°
24
75°
48°
25
74°
43°
26
65°
42°
27
67°
46°
28
71°
47°
29
81°
55°
30
68°
49°
31
67°
48°
1
69°
49°
2
71°
49°
3
73°
50°
4
74°
50°
5
68°
49°
6
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Foremost
Foremost's May 2026 forecast shows daily high temperatures ranging from 46° to 81°, with overnight lows between 29° and 55°. The average high for May is 67° with an average low of 45°. 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 Foremost. See also: June | July | August.