S
M
T
W
T
F
S
27
75°
55°
28
76°
56°
29
77°
57°
30
75°
56°
1
79°
53°
2
76°
53°
3
80°
56°
4
76°
51°
5
72°
54°
6
Hist. Avg.
79°
51°
7
Hist. Avg.
79°
51°
8
Hist. Avg.
78°
51°
9
Hist. Avg.
78°
51°
10
Hist. Avg.
78°
51°
11
Hist. Avg.
78°
51°
12
Hist. Avg.
77°
51°
13
Hist. Avg.
77°
50°
14
Hist. Avg.
77°
50°
15
Hist. Avg.
76°
50°
16
Hist. Avg.
76°
50°
17
Hist. Avg.
76°
50°
18
Hist. Avg.
76°
50°
19
Hist. Avg.
75°
50°
20
Hist. Avg.
75°
50°
21
Hist. Avg.
74°
49°
22
Hist. Avg.
74°
49°
23
Hist. Avg.
74°
49°
24
Hist. Avg.
73°
49°
25
Hist. Avg.
73°
49°
26
Hist. Avg.
72°
49°
27
Hist. Avg.
72°
48°
28
Hist. Avg.
72°
48°
29
Hist. Avg.
71°
48°
30
Hist. Avg.
71°
48°
31
Hist. Avg.
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in San Geronimo
San Geronimo's October 2026 forecast shows daily high temperatures ranging from 72° to 80°, with overnight lows between 51° and 57°. The average high for October is 76° with an average low of 55°. 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 Geronimo. See also: November | December | January.