S
M
T
W
T
F
S
26
61°
24°
27
62°
31°
28
63°
27°
29
68°
25°
30
76°
28°
1
81°
32°
2
76°
44°
3
82°
39°
4
82°
39°
5
81°
40°
6
82°
40°
7
78°
40°
8
74°
31°
9
81°
30°
10
77°
40°
11
78°
33°
12
87°
40°
13
62°
33°
14
70°
25°
15
66°
30°
16
56°
39°
17
61°
30°
18
68°
30°
19
72°
32°
20
71°
35°
21
77°
36°
22
68°
42°
23
67°
38°
24
71°
45°
25
61°
35°
26
48°
34°
27
53°
33°
28
62°
33°
29
64°
28°
30
60°
25°
31
65°
32°
1
65°
33°
2
69°
36°
3
72°
37°
4
61°
32°
5
54°
33°
6
55°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Santiam Junction State Airport
Santiam Junction State Airport's May 2026 forecast shows daily high temperatures ranging from 48° to 72°, with overnight lows between 25° and 45°. The average high for May is 62° with an average low of 34°. 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 Santiam Junction State Airport. See also: June | July | August.
