S
M
T
W
T
F
S
30
96°
72°
31
97°
75°
1
96°
74°
2
100°
75°
3
100°
77°
4
94°
77°
5
97°
74°
6
93°
76°
7
96°
74°
8
100°
75°
9
98°
74°
10
98°
74°
11
99°
75°
12
102°
74°
13
101°
74°
14
99°
73°
15
96°
70°
16
92°
69°
17
91°
68°
18
93°
68°
19
93°
63°
20
87°
64°
21
90°
63°
22
93°
69°
23
92°
68°
24
84°
68°
25
83°
67°
26
87°
67°
27
87°
66°
28
88°
67°
29
88°
67°
30
86°
62°
1
81°
56°
2
80°
55°
3
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Buchanan Dam
Buchanan Dam's September 2026 forecast shows daily high temperatures ranging from 80° to 102°, with overnight lows between 55° and 75°. The average high for September is 91° with an average low of 67°. 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 Buchanan Dam. See also: October | November | December.
