S
M
T
W
T
F
S
29
54°
23°
30
73°
40°
31
78°
51°
1
74°
44°
2
44°
37°
3
67°
35°
4
64°
38°
5
56°
36°
6
47°
28°
7
46°
20°
8
49°
28°
9
59°
36°
10
65°
41°
11
66°
45°
12
69°
47°
13
65°
44°
14
66°
43°
15
64°
38°
16
63°
41°
17
62°
34°
18
53°
39°
19
54°
38°
20
58°
40°
21
64°
40°
22
63°
41°
23
60°
41°
24
65°
40°
25
66°
36°
26
56°
34°
27
56°
34°
28
58°
36°
29
58°
34°
30
57°
35°
1
59°
38°
2
60°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mill River
Mill River's April 2026 forecast shows daily high temperatures ranging from 46° to 69°, with overnight lows between 20° and 47°. The average high for April is 60° with an average low of 37°. 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 River. See also: May | June | July.