S
M
T
W
T
F
S
29
49°
32°
30
46°
30°
1
47°
29°
2
41°
28°
3
43°
32°
4
41°
31°
5
46°
34°
6
44°
30°
7
43°
30°
8
42°
29°
9
43°
30°
10
44°
28°
11
45°
31°
12
41°
25°
13
39°
17°
14
Hist. Avg.
38°
24°
15
Hist. Avg.
38°
24°
16
Hist. Avg.
38°
24°
17
Hist. Avg.
38°
24°
18
Hist. Avg.
38°
24°
19
Hist. Avg.
38°
24°
20
Hist. Avg.
38°
24°
21
Hist. Avg.
38°
23°
22
Hist. Avg.
38°
23°
23
Hist. Avg.
38°
23°
24
Hist. Avg.
38°
23°
25
Hist. Avg.
38°
23°
26
Hist. Avg.
38°
23°
27
Hist. Avg.
38°
23°
28
Hist. Avg.
38°
23°
29
Hist. Avg.
38°
23°
30
Hist. Avg.
38°
23°
31
Hist. Avg.
38°
23°
1
Hist. Avg.
38°
23°
2
Hist. Avg.
38°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in La Grande
La Grande's December 2026 forecast shows daily high temperatures ranging from 39° to 49°, with overnight lows between 17° and 34°. The average high for December is 44° with an average low of 29°. 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 La Grande. See also: January | February | March.
