S
M
T
W
T
F
S
26
63°
44°
27
66°
40°
28
73°
37°
29
75°
38°
30
73°
47°
1
72°
46°
2
76°
49°
3
68°
40°
4
53°
39°
5
51°
40°
6
62°
44°
7
65°
47°
8
66°
50°
9
61°
48°
10
64°
49°
11
67°
48°
12
69°
50°
13
71°
49°
14
68°
47°
15
62°
43°
16
63°
43°
17
63°
44°
18
64°
43°
19
64°
44°
20
65°
44°
21
71°
49°
22
72°
51°
23
73°
50°
24
70°
48°
25
72°
51°
26
74°
51°
27
71°
50°
28
72°
48°
29
71°
48°
30
68°
46°
31
68°
46°
1
69°
47°
2
71°
48°
3
72°
50°
4
74°
51°
5
75°
51°
6
74°
52°
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 51° to 76°, with overnight lows between 39° and 52°. The average high for May is 68° with an average low of 47°. 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.
