S
M
T
W
T
F
S
26
37°
23°
27
41°
21°
28
43°
26°
29
49°
22°
30
54°
20°
1
69°
31°
2
62°
34°
3
72°
30°
4
42°
32°
5
38°
26°
6
49°
23°
7
59°
21°
8
62°
33°
9
55°
28°
10
62°
23°
11
75°
42°
12
72°
40°
13
80°
38°
14
65°
51°
15
52°
30°
16
55°
28°
17
42°
32°
18
42°
32°
19
53°
28°
20
66°
36°
21
63°
44°
22
55°
47°
23
63°
43°
24
78°
47°
25
80°
54°
26
85°
55°
27
82°
59°
28
83°
54°
29
78°
54°
30
74°
53°
31
75°
51°
1
75°
50°
2
71°
48°
3
72°
47°
4
71°
48°
5
68°
45°
6
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Glenavon
Glenavon's May 2026 forecast shows daily high temperatures ranging from 63° to 85°, with overnight lows between 43° and 59°. The average high for May is 75° with an average low of 50°. 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 Glenavon. See also: June | July | August.
