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