S
M
T
W
T
F
S
27
43°
17°
28
28°
19°
29
28°
25°
30
37°
25°
31
40°
26°
1
40°
27°
2
42°
26°
3
44°
24°
4
43°
14°
5
37°
13°
6
29°
16°
7
26°
23°
8
39°
19°
9
38°
15°
10
29°
18°
11
31°
8°
12
32°
9°
13
22°
6°
14
26°
5°
15
21°
8°
16
24°
14°
17
26°
9°
18
25°
7°
19
29°
3°
20
30°
4°
21
21°
18°
22
30°
22°
23
39°
17°
24
39°
16°
25
29°
20°
26
32°
21°
27
38°
21°
28
36°
22°
29
Hist. Avg.
32°
14°
30
Hist. Avg.
32°
14°
31
Hist. Avg.
32°
15°
1
Hist. Avg.
32°
15°
2
Hist. Avg.
33°
15°
3
Hist. Avg.
33°
15°
4
Hist. Avg.
33°
15°
5
Hist. Avg.
33°
15°
6
Hist. Avg.
33°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Portland
Portland's January 2027 forecast shows daily high temperatures ranging from 21° to 44°, with overnight lows between 3° and 27°. The average high for January is 33° with an average low of 16°. 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 Portland. See also: February | March | April.
