S
M
T
W
T
F
S
30
91°
72°
31
91°
72°
1
90°
71°
2
91°
72°
3
89°
71°
4
86°
71°
5
86°
70°
6
85°
68°
7
85°
66°
8
86°
69°
9
85°
71°
10
86°
71°
11
85°
70°
12
87°
71°
13
87°
70°
14
87°
66°
15
88°
69°
16
88°
69°
17
89°
68°
18
87°
66°
19
88°
65°
20
84°
67°
21
84°
64°
22
85°
64°
23
84°
65°
24
86°
66°
25
87°
66°
26
83°
64°
27
83°
63°
28
84°
64°
29
82°
65°
30
82°
66°
1
83°
65°
2
82°
65°
3
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Middleburg
Middleburg's September 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 63° and 72°. The average high for September is 86° with an average low of 68°. 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 Middleburg. See also: October | November | December.