S
M
T
W
T
F
S
27
84°
73°
28
88°
75°
29
90°
77°
30
90°
75°
1
88°
73°
2
86°
77°
3
90°
77°
4
84°
75°
5
89°
71°
6
89°
71°
7
89°
71°
8
89°
71°
9
90°
72°
10
91°
72°
11
88°
69°
12
87°
73°
13
88°
71°
14
89°
72°
15
88°
71°
16
89°
71°
17
88°
72°
18
88°
73°
19
86°
74°
20
86°
74°
21
87°
73°
22
86°
74°
23
86°
74°
24
87°
73°
25
85°
74°
26
86°
74°
27
86°
73°
28
87°
74°
29
87°
74°
30
88°
72°
31
88°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Juan Nonualco
San Juan Nonualco's October 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 69° and 74°. The average high for October is 88° with an average low of 72°. 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 San Juan Nonualco. See also: November | December | January.