S
M
T
W
T
F
S
26
65°
46°
27
74°
48°
28
66°
52°
29
62°
45°
30
56°
41°
1
51°
39°
2
48°
33°
3
60°
34°
4
74°
46°
5
66°
45°
6
55°
43°
7
58°
37°
8
67°
46°
9
73°
54°
10
66°
52°
11
70°
40°
12
74°
40°
13
61°
46°
14
64°
42°
15
65°
41°
16
76°
56°
17
84°
62°
18
86°
66°
19
85°
67°
20
70°
53°
21
65°
49°
22
63°
59°
23
68°
56°
24
75°
58°
25
79°
60°
26
79°
61°
27
77°
60°
28
79°
56°
29
77°
54°
30
76°
55°
31
76°
60°
1
78°
59°
2
75°
57°
3
76°
59°
4
78°
57°
5
75°
60°
6
76°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Saint Joseph
Saint Joseph's May 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 54° and 61°. The average high for May is 75° with an average low of 58°. 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 Saint Joseph. See also: June | July | August.
