S
M
T
W
T
F
S
29
66°
40°
30
66°
38°
1
69°
40°
2
71°
38°
3
70°
40°
4
70°
42°
5
73°
44°
6
75°
45°
7
77°
48°
8
76°
45°
9
75°
40°
10
66°
38°
11
63°
36°
12
64°
36°
13
Hist. Avg.
63°
39°
14
Hist. Avg.
63°
39°
15
Hist. Avg.
63°
39°
16
Hist. Avg.
62°
39°
17
Hist. Avg.
62°
39°
18
Hist. Avg.
62°
38°
19
Hist. Avg.
62°
38°
20
Hist. Avg.
62°
38°
21
Hist. Avg.
62°
38°
22
Hist. Avg.
62°
38°
23
Hist. Avg.
62°
38°
24
Hist. Avg.
62°
38°
25
Hist. Avg.
62°
38°
26
Hist. Avg.
62°
39°
27
Hist. Avg.
62°
39°
28
Hist. Avg.
62°
39°
29
Hist. Avg.
63°
39°
30
Hist. Avg.
63°
39°
31
Hist. Avg.
63°
39°
1
Hist. Avg.
63°
39°
2
Hist. Avg.
63°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Gilbert
Gilbert's December 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 36° and 48°. The average high for December is 70° with an average low of 41°. 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.