S
M
T
W
T
F
S
29
45°
36°
30
46°
37°
31
50°
39°
1
50°
43°
2
55°
43°
3
54°
43°
4
54°
41°
5
55°
45°
6
64°
41°
7
55°
39°
8
54°
37°
9
54°
39°
10
57°
41°
11
52°
45°
12
54°
48°
13
57°
46°
14
48°
41°
15
48°
36°
16
55°
41°
17
54°
39°
18
55°
39°
19
N/A
20
61°
49°
21
58°
49°
22
56°
46°
23
58°
45°
24
62°
46°
25
61°
47°
26
64°
48°
27
59°
47°
28
64°
46°
29
63°
47°
30
63°
48°
1
64°
46°
2
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Rosario
Rosario's April 2026 forecast shows daily high temperatures ranging from 56° to 64°, with overnight lows between 45° and 49°. The average high for April is 61° with an average low of 47°. 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 Rosario. See also: May | June | July.