S
M
T
W
T
F
S
29
44°
27°
30
45°
28°
1
40°
25°
2
44°
21°
3
38°
26°
4
39°
31°
5
47°
37°
6
51°
34°
7
53°
30°
8
52°
27°
9
40°
29°
10
45°
32°
11
44°
31°
12
46°
25°
13
42°
22°
14
35°
17°
15
33°
23°
16
33°
27°
17
35°
30°
18
37°
31°
19
42°
35°
20
50°
29°
21
51°
23°
22
43°
27°
23
40°
28°
24
42°
28°
25
39°
27°
26
41°
17°
27
37°
15°
28
36°
18°
29
31°
10°
30
32°
11°
31
30°
10°
1
26°
14°
2
31°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gillespie
Gillespie's December 2026 forecast shows daily high temperatures ranging from 26° to 53°, with overnight lows between 10° and 37°. The average high for December is 40° with an average low of 25°. 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 Gillespie. See also: January | February | March.
