S
M
T
W
T
F
S
30
77°
52°
31
77°
53°
1
78°
51°
2
78°
58°
3
84°
58°
4
85°
57°
5
82°
56°
6
85°
57°
7
81°
53°
8
75°
52°
9
75°
51°
10
76°
54°
11
78°
53°
12
80°
49°
13
74°
55°
14
79°
58°
15
82°
45°
16
82°
43°
17
76°
42°
18
69°
41°
19
68°
44°
20
70°
46°
21
71°
51°
22
76°
51°
23
78°
44°
24
71°
41°
25
68°
40°
26
67°
41°
27
66°
41°
28
68°
40°
29
67°
40°
30
71°
47°
1
74°
37°
2
Hist. Avg.
70°
45°
3
Hist. Avg.
70°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Platte
Platte's September 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 37° and 58°. The average high for September is 75° with an average low of 49°. 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 Platte. See also: October | November | December.