S
M
T
W
T
F
S
30
76°
53°
31
68°
62°
1
79°
63°
2
66°
64°
3
80°
65°
4
77°
56°
5
74°
53°
6
67°
52°
7
69°
54°
8
71°
54°
9
73°
58°
10
74°
56°
11
70°
53°
12
67°
51°
13
68°
51°
14
67°
52°
15
65°
51°
16
65°
54°
17
67°
47°
18
63°
45°
19
62°
45°
20
64°
49°
21
68°
53°
22
71°
53°
23
72°
52°
24
71°
51°
25
69°
49°
26
68°
50°
27
69°
51°
28
69°
51°
29
68°
47°
30
62°
44°
1
58°
43°
2
61°
47°
3
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Swiftwater
Swiftwater's September 2026 forecast shows daily high temperatures ranging from 58° to 80°, with overnight lows between 43° and 65°. The average high for September is 68° with an average low of 52°. 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 Swiftwater. See also: October | November | December.
