S
M
T
W
T
F
S
27
77°
48°
28
75°
47°
29
76°
48°
30
76°
49°
1
77°
56°
2
81°
55°
3
83°
54°
4
82°
56°
5
80°
53°
6
76°
52°
7
75°
48°
8
76°
49°
9
75°
50°
10
75°
54°
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 Larkspur
Larkspur's October 2026 forecast shows daily high temperatures ranging from 75° to 83°, with overnight lows between 47° and 56°. The average high for October is 77° with an average low of 51°. 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 Larkspur. See also: November | December | January.