S
M
T
W
T
F
S
26
56°
28°
27
59°
31°
28
66°
36°
29
66°
44°
30
71°
31°
1
79°
38°
2
83°
51°
3
82°
41°
4
80°
39°
5
79°
44°
6
81°
46°
7
77°
44°
8
75°
36°
9
79°
38°
10
84°
35°
11
79°
41°
12
92°
36°
13
68°
44°
14
70°
36°
15
66°
39°
16
55°
35°
17
54°
33°
18
66°
31°
19
68°
40°
20
71°
40°
21
75°
44°
22
79°
49°
23
82°
47°
24
79°
48°
25
72°
38°
26
58°
37°
27
65°
42°
28
70°
43°
29
66°
39°
30
65°
41°
31
72°
44°
1
70°
40°
2
75°
47°
3
76°
48°
4
76°
47°
5
75°
47°
6
75°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in John Day
John Day's May 2026 forecast shows daily high temperatures ranging from 58° to 82°, with overnight lows between 37° and 49°. The average high for May is 72° with an average low of 44°. 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 John Day. See also: June | July | August.
