S
M
T
W
T
F
S
29
44°
34°
30
47°
29°
31
57°
36°
1
47°
41°
2
52°
40°
3
56°
43°
4
58°
40°
5
62°
44°
6
66°
44°
7
53°
43°
8
57°
39°
9
61°
41°
10
69°
47°
11
55°
46°
12
59°
47°
13
54°
45°
14
48°
39°
15
49°
37°
16
54°
41°
17
55°
44°
18
53°
46°
19
53°
46°
20
56°
44°
21
57°
43°
22
59°
44°
23
58°
43°
24
53°
39°
25
53°
40°
26
56°
40°
27
60°
41°
28
60°
41°
29
55°
42°
30
55°
45°
1
56°
42°
2
56°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mill Creek
Mill Creek's April 2026 forecast shows daily high temperatures ranging from 48° to 69°, with overnight lows between 37° and 47°. The average high for April is 56° with an average low of 43°. 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 Mill Creek. See also: May | June | July.