S
M
T
W
T
F
S
26
70°
32°
27
59°
43°
28
55°
40°
29
67°
36°
30
77°
39°
1
76°
43°
2
73°
55°
3
80°
51°
4
82°
52°
5
75°
50°
6
73°
49°
7
69°
47°
8
67°
49°
9
70°
50°
10
73°
49°
11
71°
51°
12
70°
48°
13
67°
49°
14
68°
47°
15
65°
46°
16
60°
51°
17
65°
48°
18
60°
47°
19
60°
45°
20
61°
44°
21
69°
51°
22
69°
51°
23
66°
49°
24
70°
52°
25
70°
50°
26
68°
51°
27
71°
53°
28
72°
53°
29
71°
54°
30
72°
53°
31
73°
54°
1
72°
53°
2
71°
54°
3
72°
54°
4
71°
52°
5
71°
53°
6
69°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Banner
Banner's May 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 44° and 55°. The average high for May is 70° 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 Banner. See also: June | July | August.
