S
M
T
W
T
F
S
29
59°
37°
30
61°
33°
1
57°
27°
2
53°
20°
3
43°
25°
4
47°
30°
5
48°
27°
6
46°
27°
7
48°
31°
8
52°
24°
9
53°
26°
10
45°
25°
11
40°
19°
12
40°
20°
13
39°
18°
14
40°
16°
15
37°
15°
16
36°
15°
17
37°
16°
18
39°
12°
19
38°
16°
20
37°
19°
21
40°
28°
22
44°
29°
23
48°
30°
24
45°
29°
25
51°
28°
26
50°
22°
27
43°
19°
28
38°
25°
29
44°
29°
30
Hist. Avg.
42°
21°
31
Hist. Avg.
42°
21°
1
Hist. Avg.
41°
21°
2
Hist. Avg.
41°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Lost River District
Lost River District's December 2026 forecast shows daily high temperatures ranging from 36° to 61°, with overnight lows between 12° and 37°. The average high for December is 45° 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 Lost River District. See also: January | February | March.