S
M
T
W
T
F
S
30
91°
73°
31
93°
71°
1
91°
70°
2
89°
71°
3
90°
70°
4
89°
70°
5
89°
69°
6
90°
71°
7
91°
69°
8
88°
70°
9
87°
68°
10
89°
69°
11
89°
69°
12
89°
70°
13
91°
70°
14
87°
71°
15
Hist. Avg.
91°
70°
16
Hist. Avg.
91°
70°
17
Hist. Avg.
91°
70°
18
Hist. Avg.
91°
69°
19
Hist. Avg.
90°
69°
20
Hist. Avg.
90°
69°
21
Hist. Avg.
90°
69°
22
Hist. Avg.
90°
69°
23
Hist. Avg.
90°
68°
24
Hist. Avg.
90°
68°
25
Hist. Avg.
90°
68°
26
Hist. Avg.
90°
68°
27
Hist. Avg.
89°
67°
28
Hist. Avg.
89°
67°
29
Hist. Avg.
89°
67°
30
Hist. Avg.
89°
67°
1
Hist. Avg.
89°
67°
2
Hist. Avg.
89°
66°
3
Hist. Avg.
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Crystal River
Crystal River's September 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 68° and 73°. The average high for September is 90° with an average low of 70°. 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 Crystal River. See also: October | November | December.
