S
M
T
W
T
F
S
26
50°
38°
27
49°
38°
28
50°
39°
29
49°
43°
30
50°
43°
1
52°
42°
2
51°
39°
3
50°
39°
4
50°
40°
5
51°
40°
6
50°
40°
7
51°
39°
8
51°
39°
9
56°
45°
10
57°
45°
11
56°
46°
12
57°
45°
13
54°
43°
14
53°
45°
15
53°
43°
16
52°
42°
17
52°
41°
18
53°
41°
19
52°
42°
20
52°
41°
21
53°
43°
22
56°
46°
23
55°
42°
24
56°
47°
25
60°
47°
26
58°
43°
27
60°
48°
28
59°
48°
29
60°
47°
30
60°
48°
31
61°
48°
1
59°
47°
2
61°
43°
3
62°
44°
4
61°
48°
5
62°
49°
6
61°
47°
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 49° to 62°, with overnight lows between 38° and 49°. The average high for May is 55° with an average low of 43°. 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.
