S
M
T
W
T
F
S
26
66°
33°
27
59°
38°
28
54°
46°
29
73°
42°
30
79°
41°
1
78°
42°
2
82°
51°
3
90°
48°
4
81°
46°
5
73°
46°
6
69°
53°
7
71°
47°
8
64°
44°
9
79°
47°
10
67°
46°
11
82°
48°
12
89°
49°
13
57°
46°
14
58°
46°
15
49°
42°
16
48°
40°
17
57°
40°
18
68°
39°
19
64°
44°
20
70°
50°
21
81°
44°
22
81°
47°
23
41°
35°
24
36°
26°
25
30°
18°
26
24°
23°
27
40°
31°
28
45°
27°
29
44°
23°
30
45°
22°
31
43°
23°
1
51°
26°
2
57°
28°
3
55°
28°
4
57°
26°
5
48°
24°
6
47°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Johnston Ridge Observatory
Johnston Ridge Observatory's May 2026 forecast shows daily high temperatures ranging from 24° to 57°, with overnight lows between 18° and 35°. The average high for May is 44° with an average low of 25°. 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 Johnston Ridge Observatory. See also: June | July | August.
