S
M
T
W
T
F
S
26
52°
41°
27
53°
42°
28
56°
38°
29
52°
32°
30
50°
28°
1
54°
32°
2
64°
27°
3
70°
39°
4
61°
41°
5
50°
30°
6
45°
34°
7
57°
32°
8
70°
30°
9
59°
32°
10
55°
36°
11
63°
32°
12
67°
49°
13
71°
37°
14
78°
43°
15
85°
54°
16
76°
47°
17
65°
48°
18
64°
48°
19
55°
41°
20
62°
44°
21
68°
48°
22
63°
49°
23
68°
50°
24
76°
55°
25
78°
61°
26
80°
58°
27
80°
59°
28
77°
56°
29
76°
57°
30
77°
58°
31
75°
51°
1
78°
56°
2
69°
56°
3
69°
53°
4
71°
54°
5
76°
58°
6
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Francis
St. Francis's May 2026 forecast shows daily high temperatures ranging from 55° to 80°, with overnight lows between 41° and 61°. The average high for May is 72° with an average low of 53°. 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 St. Francis. See also: June | July | August.