S
M
T
W
T
F
S
30
84°
62°
31
79°
62°
1
79°
61°
2
78°
61°
3
78°
66°
4
79°
61°
5
83°
61°
6
78°
60°
7
77°
59°
8
78°
60°
9
77°
59°
10
80°
64°
11
81°
65°
12
75°
64°
13
76°
64°
14
75°
56°
15
74°
56°
16
Hist. Avg.
80°
60°
17
Hist. Avg.
79°
59°
18
Hist. Avg.
79°
59°
19
Hist. Avg.
78°
58°
20
Hist. Avg.
78°
58°
21
Hist. Avg.
78°
57°
22
Hist. Avg.
77°
57°
23
Hist. Avg.
77°
56°
24
Hist. Avg.
76°
56°
25
Hist. Avg.
76°
55°
26
Hist. Avg.
76°
55°
27
Hist. Avg.
75°
54°
28
Hist. Avg.
75°
54°
29
Hist. Avg.
74°
54°
30
Hist. Avg.
74°
53°
1
Hist. Avg.
74°
53°
2
Hist. Avg.
73°
52°
3
Hist. Avg.
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in La Plata
La Plata's September 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 56° and 66°. The average high for September is 78° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in La Plata. See also: October | November | December.
