S
M
T
W
T
F
S
26
63°
44°
27
66°
40°
28
73°
37°
29
75°
38°
30
73°
47°
1
79°
45°
2
80°
53°
3
67°
54°
4
68°
50°
5
50°
37°
6
66°
43°
7
76°
47°
8
80°
47°
9
78°
50°
10
72°
47°
11
77°
51°
12
71°
52°
13
67°
50°
14
67°
48°
15
67°
48°
16
66°
49°
17
65°
48°
18
69°
47°
19
72°
51°
20
71°
50°
21
73°
52°
22
73°
52°
23
74°
52°
24
74°
52°
25
73°
52°
26
74°
51°
27
72°
52°
28
68°
50°
29
67°
50°
30
68°
51°
31
69°
52°
1
70°
53°
2
73°
54°
3
72°
53°
4
72°
52°
5
73°
52°
6
71°
50°
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 50° to 80°, with overnight lows between 37° and 54°. The average high for May is 71° 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.
