S
M
T
W
T
F
S
29
31°
20°
30
33°
19°
1
33°
14°
2
32°
4°
3
27°
-1°
4
21°
-1°
5
16°
1°
6
15°
0°
7
17°
-3°
8
16°
-4°
9
12°
-3°
10
13°
-1°
11
15°
1°
12
16°
5°
13
20°
12°
14
25°
15°
15
29°
14°
16
30°
15°
17
29°
15°
18
30°
14°
19
29°
11°
20
28°
10°
21
24°
11°
22
22°
10°
23
24°
7°
24
23°
8°
25
19°
2°
26
18°
6°
27
17°
9°
28
23°
11°
29
27°
10°
30
11°
-12°
31
7°
-7°
1
Hist. Avg.
18°
-1°
2
Hist. Avg.
18°
-1°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Itasca State Park
Itasca State Park's December 2026 forecast shows daily high temperatures ranging from 7° to 33°, with overnight lows between -12° and 20°. The average high for December is 22° with an average low of 6°. 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 Itasca State Park. See also: January | February | March.