S
M
T
W
T
F
S
26
68°
42°
27
63°
42°
28
64°
38°
29
67°
46°
30
64°
43°
1
64°
42°
2
65°
42°
3
65°
41°
4
68°
42°
5
72°
47°
6
66°
47°
7
70°
48°
8
67°
44°
9
69°
46°
10
66°
42°
11
66°
42°
12
65°
41°
13
66°
41°
14
68°
42°
15
69°
46°
16
67°
43°
17
66°
42°
18
68°
42°
19
73°
45°
20
78°
49°
21
78°
51°
22
73°
50°
23
70°
47°
24
70°
44°
25
71°
48°
26
77°
51°
27
81°
54°
28
83°
53°
29
82°
53°
30
80°
51°
31
80°
50°
1
79°
50°
2
82°
51°
3
83°
49°
4
83°
51°
5
82°
47°
6
82°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grants Pass
Grants Pass's May 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 38° and 54°. The average high for May is 72° with an average low of 46°. 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 Grants Pass. See also: June | July | August.
