S
M
T
W
T
F
S
27
43°
31°
28
42°
35°
29
55°
30°
30
48°
26°
31
42°
26°
1
42°
24°
2
41°
22°
3
39°
24°
4
38°
24°
5
38°
25°
6
39°
24°
7
39°
23°
8
40°
22°
9
38°
27°
10
39°
33°
11
54°
28°
12
46°
22°
13
40°
23°
14
40°
23°
15
41°
29°
16
44°
20°
17
40°
18°
18
36°
20°
19
34°
22°
20
38°
30°
21
41°
33°
22
44°
24°
23
43°
23°
24
40°
34°
25
44°
29°
26
51°
26°
27
41°
21°
28
39°
26°
29
40°
34°
30
44°
26°
31
48°
22°
1
41°
24°
2
39°
19°
3
41°
18°
4
37°
20°
5
38°
21°
6
43°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Washington
Washington's January 2027 forecast shows daily high temperatures ranging from 34° to 55°, with overnight lows between 18° and 35°. The average high for January is 42° with an average low of 25°. 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 Washington. See also: February | March | April.
