S
M
T
W
T
F
S
29
43°
32°
30
42°
28°
1
46°
34°
2
48°
22°
3
45°
21°
4
39°
22°
5
38°
23°
6
37°
20°
7
38°
18°
8
39°
17°
9
37°
16°
10
34°
17°
11
33°
16°
12
34°
19°
13
35°
21°
14
37°
23°
15
37°
27°
16
38°
27°
17
39°
26°
18
41°
32°
19
43°
27°
20
45°
26°
21
43°
29°
22
43°
24°
23
40°
18°
24
39°
20°
25
33°
19°
26
34°
17°
27
34°
23°
28
37°
22°
29
41°
22°
30
37°
13°
31
32°
10°
1
Hist. Avg.
39°
21°
2
Hist. Avg.
39°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Olathe
Olathe's December 2026 forecast shows daily high temperatures ranging from 32° to 48°, with overnight lows between 10° and 34°. The average high for December is 39° with an average low of 22°. 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 Olathe. See also: January | February | March.
