S
M
T
W
T
F
S
27
35°
17°
28
34°
17°
29
33°
20°
30
34°
22°
31
35°
17°
1
35°
13°
2
33°
11°
3
29°
16°
4
31°
29°
5
37°
30°
6
42°
21°
7
46°
15°
8
39°
14°
9
31°
16°
10
33°
13°
11
33°
12°
12
29°
12°
13
27°
13°
14
30°
13°
15
29°
14°
16
32°
18°
17
37°
16°
18
33°
13°
19
32°
13°
20
28°
15°
21
31°
25°
22
36°
28°
23
40°
30°
24
46°
28°
25
48°
27°
26
43°
26°
27
43°
26°
28
44°
27°
29
43°
23°
30
37°
21°
31
34°
10°
1
30°
17°
2
Hist. Avg.
40°
23°
3
Hist. Avg.
40°
23°
4
Hist. Avg.
40°
23°
5
Hist. Avg.
41°
23°
6
Hist. Avg.
41°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Decker
Decker's January 2027 forecast shows daily high temperatures ranging from 27° to 48°, with overnight lows between 10° and 30°. The average high for January is 35° with an average low of 19°. 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 Decker. See also: February | March | April.