S
M
T
W
T
F
S
26
63°
35°
27
66°
35°
28
68°
38°
29
69°
42°
30
69°
45°
1
61°
45°
2
62°
44°
3
63°
45°
4
68°
41°
5
72°
46°
6
67°
46°
7
68°
47°
8
66°
42°
9
71°
45°
10
64°
40°
11
64°
41°
12
63°
42°
13
66°
41°
14
69°
45°
15
66°
45°
16
65°
43°
17
65°
41°
18
68°
41°
19
73°
44°
20
76°
50°
21
78°
52°
22
77°
49°
23
68°
44°
24
67°
42°
25
66°
43°
26
69°
49°
27
76°
49°
28
79°
54°
29
80°
55°
30
81°
54°
31
78°
46°
1
77°
47°
2
79°
53°
3
80°
55°
4
82°
48°
5
76°
51°
6
81°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ellensburg
Ellensburg's May 2026 forecast shows daily high temperatures ranging from 61° to 82°, with overnight lows between 35° and 55°. The average high for May is 71° 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 Ellensburg. See also: June | July | August.
