S
M
T
W
T
F
S
29
57°
35°
30
54°
30°
31
54°
30°
1
61°
39°
2
57°
39°
3
65°
36°
4
70°
31°
5
71°
35°
6
78°
38°
7
71°
42°
8
68°
32°
9
73°
32°
10
69°
36°
11
70°
43°
12
59°
43°
13
64°
46°
14
56°
41°
15
57°
39°
16
59°
36°
17
60°
31°
18
70°
30°
19
73°
32°
20
77°
39°
21
75°
41°
22
54°
47°
23
66°
45°
24
62°
33°
25
64°
27°
26
68°
27°
27
71°
33°
28
67°
48°
29
72°
43°
30
78°
36°
1
83°
37°
2
85°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Hermiston
Hermiston's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April 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 April weather will actually feel in Hermiston. See also: May | June | July.
