S
M
T
W
T
F
S
29
48°
41°
30
53°
39°
1
53°
35°
2
51°
35°
3
48°
34°
4
47°
32°
5
48°
33°
6
47°
35°
7
48°
36°
8
48°
40°
9
50°
38°
10
50°
39°
11
Hist. Avg.
49°
41°
12
Hist. Avg.
49°
41°
13
Hist. Avg.
49°
41°
14
Hist. Avg.
49°
41°
15
Hist. Avg.
49°
41°
16
Hist. Avg.
49°
41°
17
Hist. Avg.
49°
41°
18
Hist. Avg.
49°
41°
19
Hist. Avg.
49°
41°
20
Hist. Avg.
49°
41°
21
Hist. Avg.
49°
41°
22
Hist. Avg.
49°
41°
23
Hist. Avg.
49°
41°
24
Hist. Avg.
48°
40°
25
Hist. Avg.
48°
40°
26
Hist. Avg.
48°
40°
27
Hist. Avg.
48°
40°
28
Hist. Avg.
48°
40°
29
Hist. Avg.
48°
40°
30
Hist. Avg.
48°
40°
31
Hist. Avg.
48°
40°
1
Hist. Avg.
48°
40°
2
Hist. Avg.
48°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in St Leonards
St Leonards's December 2026 forecast shows daily high temperatures ranging from 47° to 53°, with overnight lows between 32° and 41°. The average high for December is 49° with an average low of 36°. 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 St Leonards. See also: January | February | March.