S
M
T
W
T
F
S
26
62°
50°
27
64°
48°
28
71°
41°
29
77°
45°
30
82°
46°
1
86°
50°
2
87°
53°
3
72°
50°
4
63°
54°
5
67°
54°
6
79°
46°
7
84°
51°
8
89°
55°
9
87°
51°
10
95°
56°
11
99°
58°
12
100°
57°
13
81°
54°
14
87°
53°
15
87°
51°
16
80°
50°
17
77°
48°
18
85°
53°
19
91°
57°
20
95°
60°
21
98°
63°
22
97°
62°
23
97°
61°
24
94°
62°
25
93°
62°
26
94°
63°
27
93°
61°
28
90°
57°
29
88°
59°
30
91°
59°
31
89°
60°
1
93°
65°
2
94°
65°
3
95°
66°
4
95°
66°
5
96°
65°
6
95°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wasco
Wasco's May 2026 forecast shows daily high temperatures ranging from 85° to 98°, with overnight lows between 53° and 66°. The average high for May is 93° with an average low of 62°. 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 Wasco. See also: June | July | August.