S
M
T
W
T
F
S
29
49°
28°
30
44°
20°
1
35°
14°
2
33°
15°
3
37°
27°
4
39°
27°
5
36°
26°
6
36°
20°
7
33°
18°
8
32°
21°
9
38°
21°
10
43°
25°
11
43°
25°
12
46°
24°
13
44°
25°
14
38°
22°
15
38°
22°
16
37°
20°
17
38°
13°
18
35°
12°
19
36°
6°
20
28°
6°
21
26°
18°
22
36°
17°
23
37°
13°
24
37°
7°
25
32°
20°
26
35°
21°
27
37°
20°
28
37°
20°
29
36°
16°
30
36°
12°
31
33°
4°
1
29°
3°
2
26°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gresham
Gresham's December 2026 forecast shows daily high temperatures ranging from 26° to 49°, with overnight lows between 3° and 28°. The average high for December is 36° with an average low of 18°. 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 Gresham. See also: January | February | March.
