S
M
T
W
T
F
S
29
44°
33°
30
48°
31°
31
55°
36°
1
46°
40°
2
51°
42°
3
51°
42°
4
55°
40°
5
64°
41°
6
56°
38°
7
54°
38°
8
57°
34°
9
62°
35°
10
59°
40°
11
50°
45°
12
52°
45°
13
48°
44°
14
46°
39°
15
46°
35°
16
52°
31°
17
52°
42°
18
57°
48°
19
65°
48°
20
62°
48°
21
54°
48°
22
56°
46°
23
58°
45°
24
60°
46°
25
57°
48°
26
57°
49°
27
56°
48°
28
55°
47°
29
59°
48°
30
58°
40°
1
53°
40°
2
53°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Olympic National Park
Olympic National Park's April 2026 forecast shows daily high temperatures ranging from 52° to 65°, with overnight lows between 40° and 49°. The average high for April is 57° with an average low of 46°. 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 Olympic National Park. See also: May | June | July.