S
M
T
W
T
F
S
30
96°
69°
31
96°
72°
1
95°
74°
2
96°
74°
3
97°
74°
4
97°
73°
5
97°
73°
6
101°
74°
7
100°
76°
8
99°
74°
9
97°
73°
10
96°
74°
11
95°
74°
12
96°
73°
13
95°
74°
14
96°
74°
15
96°
75°
16
96°
74°
17
98°
70°
18
90°
69°
19
88°
61°
20
91°
67°
21
89°
67°
22
91°
69°
23
87°
58°
24
91°
68°
25
90°
68°
26
90°
68°
27
89°
67°
28
89°
66°
29
88°
67°
30
89°
67°
1
85°
66°
2
87°
64°
3
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Swartz
Swartz's September 2026 forecast shows daily high temperatures ranging from 85° to 98°, with overnight lows between 58° and 75°. The average high for September is 91° with an average low of 69°. 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 Swartz. See also: October | November | December.
