S
M
T
W
T
F
S
30
86°
78°
31
85°
75°
1
86°
77°
2
83°
76°
3
85°
76°
4
85°
76°
5
86°
75°
6
82°
75°
7
80°
75°
8
87°
77°
9
85°
75°
10
86°
74°
11
84°
77°
12
84°
72°
13
83°
72°
14
83°
71°
15
84°
71°
16
83°
78°
17
84°
76°
18
85°
75°
19
84°
76°
20
86°
75°
21
87°
73°
22
87°
72°
23
87°
73°
24
84°
75°
25
85°
70°
26
84°
72°
27
82°
70°
28
85°
70°
29
84°
70°
30
82°
69°
1
85°
70°
2
84°
69°
3
81°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Princeville
Princeville's September 2026 forecast shows daily high temperatures ranging from 81° to 87°, with overnight lows between 69° and 75°. The average high for September is 85° with an average low of 71°. 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 Princeville. See also: October | November | December.