S
M
T
W
T
F
S
29
86°
52°
30
81°
53°
31
63°
51°
1
64°
52°
2
69°
39°
3
83°
41°
4
79°
37°
5
90°
50°
6
72°
47°
7
78°
42°
8
86°
46°
9
76°
47°
10
59°
53°
11
51°
45°
12
56°
44°
13
65°
43°
14
73°
41°
15
68°
41°
16
65°
41°
17
65°
36°
18
70°
39°
19
64°
40°
20
55°
50°
21
57°
48°
22
61°
47°
23
65°
40°
24
61°
43°
25
54°
44°
26
62°
44°
27
65°
44°
28
71°
42°
29
75°
44°
30
74°
49°
1
76°
47°
2
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Monte Rio
Monte Rio's April 2026 forecast shows daily high temperatures ranging from 62° to 76°, with overnight lows between 42° and 49°. The average high for April is 70° with an average low of 45°. 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 Monte Rio. See also: May | June | July.