S
M
T
W
T
F
S
27
37°
22°
28
35°
30°
29
38°
26°
30
39°
32°
31
40°
34°
1
44°
33°
2
47°
29°
3
45°
29°
4
42°
25°
5
40°
23°
6
37°
22°
7
35°
21°
8
37°
20°
9
36°
20°
10
37°
22°
11
37°
24°
12
38°
22°
13
40°
22°
14
39°
23°
15
40°
24°
16
43°
25°
17
43°
26°
18
44°
27°
19
44°
30°
20
43°
30°
21
42°
32°
22
43°
34°
23
44°
33°
24
45°
29°
25
43°
33°
26
46°
32°
27
44°
34°
28
45°
35°
29
46°
34°
30
49°
36°
31
Hist. Avg.
45°
29°
1
Hist. Avg.
45°
29°
2
Hist. Avg.
46°
29°
3
Hist. Avg.
46°
29°
4
Hist. Avg.
46°
29°
5
Hist. Avg.
46°
29°
6
Hist. Avg.
46°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Hermiston
Hermiston's January 2027 forecast shows daily high temperatures ranging from 35° to 49°, with overnight lows between 20° and 36°. The average high for January is 41° with an average low of 28°. 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 Hermiston. See also: February | March | April.
