S
M
T
W
T
F
S
26
49°
38°
27
44°
40°
28
51°
33°
29
52°
28°
30
50°
28°
1
54°
30°
2
64°
38°
3
65°
49°
4
58°
29°
5
46°
28°
6
48°
30°
7
51°
33°
8
60°
37°
9
61°
38°
10
57°
40°
11
63°
43°
12
68°
45°
13
62°
44°
14
61°
44°
15
66°
44°
16
68°
50°
17
69°
49°
18
68°
51°
19
66°
51°
20
67°
46°
21
62°
42°
22
62°
42°
23
63°
44°
24
63°
43°
25
64°
44°
26
63°
45°
27
64°
45°
28
65°
46°
29
67°
53°
30
66°
50°
31
67°
51°
1
74°
56°
2
76°
57°
3
77°
58°
4
78°
59°
5
77°
59°
6
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Greenwald
Greenwald's May 2026 forecast shows daily high temperatures ranging from 46° to 78°, with overnight lows between 28° and 60°. The average high for May is 65° with an average low of 46°. 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 Greenwald. See also: June | July | August.