S
M
T
W
T
F
S
29
41°
28°
30
40°
27°
1
40°
26°
2
39°
26°
3
40°
29°
4
41°
28°
5
42°
29°
6
40°
34°
7
39°
36°
8
39°
35°
9
40°
27°
10
38°
27°
11
49°
31°
12
46°
34°
13
44°
29°
14
48°
27°
15
40°
24°
16
37°
25°
17
36°
27°
18
38°
30°
19
43°
32°
20
44°
33°
21
46°
33°
22
47°
32°
23
47°
34°
24
46°
36°
25
49°
27°
26
50°
26°
27
46°
24°
28
36°
26°
29
37°
30°
30
44°
30°
31
44°
33°
1
46°
34°
2
47°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Purchase
Purchase's December 2026 forecast shows daily high temperatures ranging from 36° to 50°, with overnight lows between 24° and 36°. The average high for December is 43° with an average low of 30°. 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 Purchase. See also: January | February | March.
