S
M
T
W
T
F
S
29
79°
63°
30
79°
63°
1
78°
61°
2
77°
63°
3
78°
62°
4
78°
62°
5
79°
61°
6
79°
62°
7
78°
62°
8
78°
61°
9
77°
62°
10
78°
62°
11
77°
61°
12
78°
62°
13
78°
61°
14
80°
59°
15
81°
60°
16
80°
60°
17
81°
59°
18
81°
60°
19
80°
60°
20
81°
59°
21
81°
60°
22
80°
60°
23
81°
58°
24
81°
59°
25
80°
58°
26
80°
59°
27
80°
60°
28
81°
59°
29
80°
58°
30
80°
59°
31
79°
59°
1
80°
60°
2
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Sector Olimpia
Sector Olimpia's December 2026 forecast shows daily high temperatures ranging from 77° to 81°, with overnight lows between 58° and 63°. The average high for December is 79° with an average low of 60°. 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 Sector Olimpia. See also: January | February | March.