S
M
T
W
T
F
S
29
41°
30°
30
41°
30°
1
42°
37°
2
45°
39°
3
46°
35°
4
45°
33°
5
47°
30°
6
46°
30°
7
43°
31°
8
43°
35°
9
46°
32°
10
43°
29°
11
44°
29°
12
42°
30°
13
47°
35°
14
42°
34°
15
50°
34°
16
46°
37°
17
43°
33°
18
44°
34°
19
46°
36°
20
44°
34°
21
43°
37°
22
46°
35°
23
45°
33°
24
43°
31°
25
44°
27°
26
43°
26°
27
37°
26°
28
36°
30°
29
38°
26°
30
37°
35°
31
41°
37°
1
46°
31°
2
45°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cascade Locks
Cascade Locks's December 2026 forecast shows daily high temperatures ranging from 36° to 50°, with overnight lows between 26° and 39°. The average high for December is 43° with an average low of 32°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Cascade Locks. See also: January | February | March.
