S
M
T
W
T
F
S
26
67°
39°
27
65°
45°
28
63°
46°
29
64°
43°
30
64°
44°
31
61°
39°
1
64°
42°
2
68°
46°
3
67°
46°
4
66°
45°
5
68°
42°
6
59°
45°
7
61°
42°
8
62°
40°
9
66°
39°
10
59°
38°
11
60°
45°
12
66°
47°
13
70°
48°
14
71°
50°
15
71°
48°
16
72°
47°
17
Hist. Avg.
65°
44°
18
Hist. Avg.
65°
44°
19
Hist. Avg.
66°
44°
20
Hist. Avg.
66°
45°
21
Hist. Avg.
66°
45°
22
Hist. Avg.
66°
45°
23
Hist. Avg.
66°
45°
24
Hist. Avg.
66°
45°
25
Hist. Avg.
66°
45°
26
Hist. Avg.
66°
45°
27
Hist. Avg.
66°
45°
28
Hist. Avg.
66°
45°
29
Hist. Avg.
67°
45°
30
Hist. Avg.
67°
45°
31
Hist. Avg.
67°
46°
1
Hist. Avg.
67°
46°
2
Hist. Avg.
67°
46°
3
Hist. Avg.
67°
46°
4
Hist. Avg.
67°
46°
5
Hist. Avg.
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Rosario
Rosario's August 2026 forecast shows daily high temperatures ranging from 59° to 72°, with overnight lows between 38° and 50°. The average high for August is 65° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Rosario. See also: September | October | November.
