S
M
T
W
T
F
S
26
84°
60°
27
85°
61°
28
75°
66°
29
83°
65°
30
74°
63°
1
67°
55°
2
73°
50°
3
75°
47°
4
82°
49°
5
83°
52°
6
82°
64°
7
76°
63°
8
70°
61°
9
71°
62°
10
81°
63°
11
84°
65°
12
74°
65°
13
85°
58°
14
82°
56°
15
84°
53°
16
83°
64°
17
85°
67°
18
87°
68°
19
86°
68°
20
85°
67°
21
84°
66°
22
80°
67°
23
80°
66°
24
82°
65°
25
78°
65°
26
84°
64°
27
81°
65°
28
82°
66°
29
86°
64°
30
86°
67°
31
85°
66°
1
86°
68°
2
87°
68°
3
83°
67°
4
81°
68°
5
82°
68°
6
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Johnstown East
Johnstown East's May 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 64° and 68°. The average high for May is 83° with an average low of 66°. 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 Johnstown East. See also: June | July | August.