S
M
T
W
T
F
S
29
49°
24°
30
49°
22°
1
42°
21°
2
34°
24°
3
35°
30°
4
37°
34°
5
42°
34°
6
42°
33°
7
44°
30°
8
43°
29°
9
39°
26°
10
37°
25°
11
36°
22°
12
37°
21°
13
33°
19°
14
32°
17°
15
30°
20°
16
30°
22°
17
Hist. Avg.
38°
26°
18
Hist. Avg.
38°
26°
19
Hist. Avg.
37°
25°
20
Hist. Avg.
37°
25°
21
Hist. Avg.
37°
25°
22
Hist. Avg.
37°
25°
23
Hist. Avg.
36°
24°
24
Hist. Avg.
36°
24°
25
Hist. Avg.
36°
24°
26
Hist. Avg.
36°
24°
27
Hist. Avg.
36°
23°
28
Hist. Avg.
35°
23°
29
Hist. Avg.
35°
23°
30
Hist. Avg.
35°
23°
31
Hist. Avg.
35°
23°
1
Hist. Avg.
35°
22°
2
Hist. Avg.
34°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in St. Joseph
St. Joseph's December 2026 forecast shows daily high temperatures ranging from 30° to 49°, with overnight lows between 17° and 34°. The average high for December is 38° 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 St. Joseph. See also: January | February | March.
