S
M
T
W
T
F
S
29
38°
25°
30
38°
26°
1
40°
24°
2
39°
26°
3
38°
25°
4
37°
24°
5
37°
25°
6
36°
24°
7
37°
22°
8
36°
25°
9
36°
26°
10
38°
21°
11
40°
20°
12
33°
21°
13
39°
29°
14
38°
23°
15
36°
23°
16
Hist. Avg.
32°
20°
17
Hist. Avg.
32°
19°
18
Hist. Avg.
31°
19°
19
Hist. Avg.
31°
19°
20
Hist. Avg.
31°
19°
21
Hist. Avg.
31°
18°
22
Hist. Avg.
30°
18°
23
Hist. Avg.
30°
18°
24
Hist. Avg.
30°
17°
25
Hist. Avg.
30°
17°
26
Hist. Avg.
30°
17°
27
Hist. Avg.
29°
16°
28
Hist. Avg.
29°
16°
29
Hist. Avg.
29°
16°
30
Hist. Avg.
29°
16°
31
Hist. Avg.
28°
15°
1
Hist. Avg.
28°
15°
2
Hist. Avg.
28°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Harrietta
Harrietta's December 2026 forecast shows daily high temperatures ranging from 33° to 40°, with overnight lows between 20° and 29°. The average high for December is 37° with an average low of 24°. 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 Harrietta. See also: January | February | March.
