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