S
M
T
W
T
F
S
29
37°
25°
30
37°
24°
1
32°
23°
2
32°
23°
3
31°
22°
4
34°
23°
5
34°
22°
6
30°
20°
7
26°
11°
8
21°
11°
9
22°
13°
10
31°
20°
11
33°
20°
12
33°
19°
13
30°
19°
14
21°
17°
15
25°
15°
16
30°
16°
17
28°
17°
18
29°
16°
19
28°
12°
20
28°
5°
21
25°
11°
22
22°
12°
23
27°
15°
24
27°
11°
25
29°
6°
26
22°
10°
27
20°
13°
28
25°
11°
29
27°
8°
30
23°
7°
31
25°
1°
1
25°
-2°
2
15°
-1°
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 15° to 37°, with overnight lows between -2° and 25°. The average high for December is 28° with an average low of 14°. 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.
