S
M
T
W
T
F
S
29
41°
27°
30
39°
31°
31
47°
33°
1
54°
37°
2
49°
30°
3
48°
39°
4
46°
40°
5
50°
40°
6
45°
36°
7
46°
30°
8
48°
30°
9
50°
35°
10
45°
33°
11
56°
35°
12
53°
36°
13
53°
37°
14
52°
38°
15
53°
40°
16
56°
39°
17
54°
38°
18
54°
38°
19
56°
39°
20
57°
35°
21
52°
33°
22
56°
32°
23
56°
37°
24
53°
35°
25
52°
35°
26
53°
36°
27
53°
38°
28
54°
39°
29
55°
39°
30
55°
38°
1
56°
38°
2
57°
36°
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 45° to 57°, with overnight lows between 30° and 40°. The average high for April is 53° with an average low of 36°. 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.