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
76°
45°
3
81°
47°
4
76°
47°
5
66°
47°
6
58°
47°
7
64°
45°
8
64°
47°
9
68°
47°
10
66°
51°
11
71°
50°
12
74°
50°
13
70°
49°
14
64°
47°
15
63°
46°
16
66°
44°
17
64°
46°
18
63°
47°
19
64°
46°
20
63°
47°
21
66°
49°
22
62°
48°
23
64°
48°
24
68°
52°
25
66°
49°
26
62°
45°
27
62°
45°
28
66°
52°
29
63°
53°
30
65°
51°
31
71°
53°
1
72°
54°
2
72°
52°
3
66°
51°
4
70°
52°
5
71°
49°
6
63°
48°
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 62° to 74°, with overnight lows between 44° and 54°. The average high for May is 66° with an average low of 49°. 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.
