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