S
M
T
W
T
F
S
28
44°
20°
29
45°
11°
30
44°
12°
31
45°
17°
1
37°
30°
2
46°
30°
3
42°
28°
4
43°
36°
5
53°
35°
6
50°
28°
7
48°
26°
8
46°
25°
9
42°
20°
10
39°
12°
11
42°
14°
12
45°
10°
13
46°
18°
14
52°
16°
15
50°
17°
16
53°
19°
17
50°
18°
18
46°
18°
19
52°
19°
20
47°
12°
21
46°
14°
22
45°
15°
23
44°
21°
24
47°
25°
25
43°
16°
26
40°
11°
27
45°
16°
28
46°
13°
29
49°
13°
30
49°
17°
31
51°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Green River
Green River's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Green River. See also: February | March | April.