S
M
T
W
T
F
S
26
77°
45°
27
69°
57°
28
62°
51°
29
60°
40°
30
61°
36°
1
56°
38°
2
60°
37°
3
69°
42°
4
78°
47°
5
58°
45°
6
58°
38°
7
63°
36°
8
64°
47°
9
78°
48°
10
67°
47°
11
69°
42°
12
81°
48°
13
69°
49°
14
72°
41°
15
78°
53°
16
78°
61°
17
84°
67°
18
74°
64°
19
74°
54°
20
69°
49°
21
72°
46°
22
72°
57°
23
77°
57°
24
84°
55°
25
83°
57°
26
84°
64°
27
81°
61°
28
85°
61°
29
82°
56°
30
78°
57°
31
79°
56°
1
77°
53°
2
78°
56°
3
82°
59°
4
81°
60°
5
83°
59°
6
79°
58°
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 77° to 85°, with overnight lows between 53° and 64°. The average high for May is 81° with an average low of 58°. 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.
