S
M
T
W
T
F
S
29
42°
33°
30
44°
31°
31
47°
36°
1
45°
39°
2
52°
38°
3
52°
41°
4
54°
42°
5
61°
45°
6
66°
41°
7
54°
38°
8
57°
39°
9
62°
40°
10
63°
42°
11
56°
43°
12
55°
43°
13
56°
43°
14
55°
44°
15
53°
40°
16
57°
41°
17
58°
40°
18
59°
38°
19
60°
40°
20
66°
49°
21
53°
41°
22
51°
39°
23
52°
40°
24
53°
40°
25
53°
43°
26
54°
41°
27
55°
41°
28
57°
44°
29
59°
46°
30
55°
45°
1
61°
47°
2
61°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mill Bay
Mill Bay's April 2026 forecast shows daily high temperatures ranging from 51° to 66°, with overnight lows between 38° and 49°. The average high for April is 57° with an average low of 42°. 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 Bay. See also: May | June | July.