S
M
T
W
T
F
S
26
52°
39°
27
51°
40°
28
51°
38°
29
50°
43°
30
51°
43°
1
51°
42°
2
50°
39°
3
50°
39°
4
51°
40°
5
50°
38°
6
50°
39°
7
51°
40°
8
51°
44°
9
55°
45°
10
52°
44°
11
52°
42°
12
51°
40°
13
52°
43°
14
55°
45°
15
58°
44°
16
58°
46°
17
56°
46°
18
59°
45°
19
60°
47°
20
59°
46°
21
54°
45°
22
58°
47°
23
56°
45°
24
56°
46°
25
60°
47°
26
61°
49°
27
61°
43°
28
59°
48°
29
57°
48°
30
59°
46°
31
58°
48°
1
60°
49°
2
62°
44°
3
58°
46°
4
57°
47°
5
57°
44°
6
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Kelso
Kelso's May 2026 forecast shows daily high temperatures ranging from 50° to 62°, with overnight lows between 38° and 49°. The average high for May is 55° with an average low of 44°. 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 Kelso. See also: June | July | August.
