S
M
T
W
T
F
S
29
Hist. Avg.
80°
49°
30
Hist. Avg.
80°
49°
1
Hist. Avg.
80°
49°
2
Hist. Avg.
80°
49°
3
Hist. Avg.
80°
49°
4
Hist. Avg.
81°
49°
5
Hist. Avg.
81°
49°
6
Hist. Avg.
81°
50°
7
Hist. Avg.
81°
50°
8
Hist. Avg.
81°
50°
9
Hist. Avg.
81°
50°
10
Hist. Avg.
82°
50°
11
Hist. Avg.
82°
50°
12
Hist. Avg.
82°
50°
13
Hist. Avg.
82°
50°
14
Hist. Avg.
82°
50°
15
Hist. Avg.
82°
50°
16
Hist. Avg.
83°
51°
17
Hist. Avg.
83°
51°
18
Hist. Avg.
83°
51°
19
Hist. Avg.
83°
51°
20
Hist. Avg.
83°
51°
21
Hist. Avg.
83°
51°
22
Hist. Avg.
83°
51°
23
Hist. Avg.
83°
51°
24
Hist. Avg.
83°
51°
25
Hist. Avg.
83°
51°
26
Hist. Avg.
83°
51°
27
Hist. Avg.
83°
51°
28
Hist. Avg.
83°
51°
29
Hist. Avg.
83°
51°
30
Hist. Avg.
83°
51°
31
Hist. Avg.
84°
52°
1
Hist. Avg.
84°
52°
2
Hist. Avg.
84°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Santiago
Santiago's December 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Santiago. See also: January | February | March.
