S
M
T
W
T
F
S
26
45°
21°
27
35°
26°
28
53°
19°
29
55°
27°
30
58°
22°
1
66°
31°
2
72°
31°
3
71°
39°
4
55°
38°
5
49°
22°
6
58°
16°
7
61°
31°
8
70°
34°
9
61°
38°
10
73°
32°
11
78°
42°
12
73°
38°
13
95°
35°
14
73°
38°
15
69°
34°
16
73°
32°
17
50°
37°
18
42°
28°
19
61°
21°
20
69°
30°
21
45°
37°
22
64°
33°
23
74°
37°
24
76°
51°
25
82°
55°
26
83°
54°
27
77°
56°
28
85°
54°
29
84°
48°
30
75°
48°
31
73°
49°
1
70°
47°
2
78°
51°
3
77°
52°
4
74°
52°
5
78°
53°
6
71°
45°
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 70° to 85°, with overnight lows between 45° and 56°. The average high for May is 77° with an average low of 51°. 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.
