S
M
T
W
T
F
S
26
57°
30°
27
61°
32°
28
64°
33°
29
62°
37°
30
60°
34°
1
62°
34°
2
66°
37°
3
65°
38°
4
65°
39°
5
64°
36°
6
61°
35°
7
64°
34°
8
60°
30°
9
62°
36°
10
68°
38°
11
72°
39°
12
73°
39°
13
74°
42°
14
75°
43°
15
75°
43°
16
74°
42°
17
75°
42°
18
72°
42°
19
77°
36°
20
77°
40°
21
74°
32°
22
65°
34°
23
70°
38°
24
76°
34°
25
73°
40°
26
74°
35°
27
73°
31°
28
70°
34°
29
72°
39°
30
80°
39°
31
82°
40°
1
83°
43°
2
83°
44°
3
82°
46°
4
84°
44°
5
83°
39°
6
80°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ephraim
Ephraim's May 2026 forecast shows daily high temperatures ranging from 57° to 84°, with overnight lows between 30° and 46°. The average high for May is 71° with an average low of 38°. 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 Ephraim. See also: June | July | August.