S
M
T
W
T
F
S
27
85°
61°
28
85°
71°
29
85°
72°
30
85°
75°
1
88°
77°
2
87°
77°
3
86°
73°
4
88°
73°
5
84°
72°
6
83°
73°
7
85°
71°
8
82°
71°
9
83°
70°
10
82°
67°
11
81°
68°
12
82°
70°
13
83°
69°
14
83°
68°
15
78°
69°
16
78°
69°
17
77°
68°
18
77°
68°
19
80°
65°
20
83°
64°
21
83°
66°
22
82°
67°
23
79°
67°
24
77°
65°
25
76°
66°
26
76°
66°
27
78°
65°
28
78°
66°
29
77°
66°
30
78°
65°
31
78°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. Augustine Beach
St. Augustine Beach's October 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 64° and 77°. The average high for October is 81° 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 October weather will actually feel in St. Augustine Beach. See also: November | December | January.