S
M
T
W
T
F
S
29
37°
19°
30
27°
15°
1
22°
18°
2
35°
20°
3
36°
19°
4
32°
20°
5
31°
18°
6
27°
14°
7
19°
16°
8
33°
18°
9
33°
18°
10
34°
17°
11
33°
17°
12
32°
16°
13
33°
17°
14
24°
13°
15
27°
13°
16
27°
9°
17
28°
6°
18
23°
-3°
19
18°
-5°
20
14°
9°
21
26°
12°
22
27°
8°
23
26°
8°
24
20°
7°
25
25°
10°
26
25°
9°
27
24°
2°
28
23°
-5°
29
14°
-6°
30
11°
-7°
31
10°
-8°
1
10°
4°
2
12°
8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Harvey
Harvey's December 2026 forecast shows daily high temperatures ranging from 10° to 37°, with overnight lows between -8° and 20°. The average high for December is 25° with an average low of 10°. 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 Harvey. See also: January | February | March.
