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