S
M
T
W
T
F
S
26
6°
0°
27
5°
-4°
28
0°
-7°
29
0°
-7°
30
3°
-5°
1
8°
-1°
2
8°
2°
3
10°
2°
4
8°
2°
5
12°
1°
6
9°
5°
7
9°
0°
8
12°
2°
9
11°
5°
10
14°
10°
11
24°
15°
12
28°
15°
13
26°
15°
14
20°
11°
15
19°
11°
16
26°
15°
17
22°
16°
18
23°
17°
19
24°
15°
20
24°
14°
21
23°
15°
22
23°
16°
23
24°
16°
24
22°
17°
25
26°
18°
26
27°
19°
27
28°
20°
28
29°
20°
29
29°
21°
30
30°
22°
31
30°
23°
1
31°
24°
2
32°
23°
3
31°
24°
4
32°
25°
5
32°
25°
6
32°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Alert
Alert's May 2026 forecast shows daily high temperatures ranging from 9° to 32°, with overnight lows between -0° and 26°. The average high for May is 24° with an average low of 16°. 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 Alert. See also: June | July | August.