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