S
M
T
W
T
F
S
30
74°
59°
31
76°
63°
1
78°
64°
2
78°
64°
3
77°
62°
4
74°
60°
5
73°
59°
6
72°
58°
7
73°
61°
8
76°
58°
9
71°
56°
10
72°
56°
11
77°
50°
12
69°
51°
13
69°
53°
14
70°
52°
15
69°
50°
16
70°
52°
17
69°
50°
18
71°
54°
19
69°
51°
20
69°
49°
21
67°
48°
22
67°
52°
23
70°
50°
24
74°
49°
25
72°
54°
26
73°
54°
27
73°
52°
28
65°
50°
29
72°
52°
30
72°
45°
1
65°
52°
2
70°
54°
3
71°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fireworks
Fireworks's September 2026 forecast shows daily high temperatures ranging from 65° to 78°, with overnight lows between 45° and 64°. The average high for September is 72° with an average low of 54°. 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 Fireworks. See also: October | November | December.
