S
M
T
W
T
F
S
30
82°
59°
31
81°
60°
1
79°
63°
2
79°
63°
3
86°
62°
4
86°
63°
5
81°
60°
6
80°
56°
7
85°
60°
8
85°
57°
9
78°
54°
10
78°
57°
11
79°
54°
12
82°
53°
13
81°
60°
14
83°
54°
15
76°
53°
16
74°
55°
17
75°
52°
18
76°
58°
19
81°
50°
20
79°
55°
21
80°
57°
22
81°
52°
23
79°
51°
24
79°
49°
25
78°
50°
26
78°
56°
27
79°
56°
28
78°
55°
29
79°
53°
30
74°
52°
1
75°
55°
2
77°
54°
3
78°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fredericksburg
Fredericksburg's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 49° and 63°. The average high for September is 79° with an average low of 56°. 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 Fredericksburg. See also: October | November | December.
