S
M
T
W
T
F
S
30
90°
77°
31
89°
79°
1
88°
76°
2
86°
75°
3
88°
75°
4
91°
75°
5
90°
75°
6
89°
72°
7
87°
71°
8
89°
72°
9
88°
71°
10
87°
70°
11
87°
71°
12
89°
70°
13
87°
70°
14
88°
69°
15
88°
72°
16
87°
71°
17
86°
71°
18
84°
70°
19
85°
71°
20
83°
70°
21
83°
70°
22
82°
69°
23
81°
70°
24
82°
70°
25
82°
69°
26
81°
68°
27
83°
69°
28
84°
69°
29
83°
68°
30
82°
69°
1
81°
69°
2
81°
68°
3
80°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Green Cove Springs
Green Cove Springs's September 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 68° and 76°. The average high for September is 85° with an average low of 71°. 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 Green Cove Springs. See also: October | November | December.
