S
M
T
W
T
F
S
30
89°
68°
31
88°
68°
1
88°
68°
2
87°
68°
3
88°
67°
4
89°
68°
5
89°
69°
6
88°
67°
7
85°
62°
8
82°
64°
9
83°
65°
10
85°
61°
11
85°
61°
12
83°
62°
13
84°
64°
14
85°
65°
15
86°
64°
16
85°
62°
17
82°
59°
18
78°
58°
19
77°
63°
20
77°
58°
21
78°
57°
22
76°
59°
23
76°
62°
24
77°
62°
25
78°
61°
26
81°
62°
27
78°
61°
28
81°
62°
29
81°
61°
30
76°
60°
1
75°
59°
2
78°
53°
3
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Whitesboro
Whitesboro's September 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 52° and 69°. The average high for September is 82° with an average low of 62°. 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 Whitesboro. See also: October | November | December.
