S
M
T
W
T
F
S
27
79°
46°
28
78°
45°
29
79°
44°
30
77°
46°
1
77°
53°
2
84°
52°
3
84°
50°
4
80°
51°
5
81°
48°
6
78°
47°
7
76°
45°
8
78°
46°
9
78°
46°
10
76°
44°
11
79°
47°
12
81°
44°
13
Hist. Avg.
76°
47°
14
Hist. Avg.
75°
47°
15
Hist. Avg.
75°
47°
16
Hist. Avg.
75°
47°
17
Hist. Avg.
74°
47°
18
Hist. Avg.
74°
46°
19
Hist. Avg.
74°
46°
20
Hist. Avg.
73°
46°
21
Hist. Avg.
73°
46°
22
Hist. Avg.
73°
46°
23
Hist. Avg.
72°
45°
24
Hist. Avg.
72°
45°
25
Hist. Avg.
72°
45°
26
Hist. Avg.
71°
45°
27
Hist. Avg.
71°
45°
28
Hist. Avg.
71°
44°
29
Hist. Avg.
70°
44°
30
Hist. Avg.
70°
44°
31
Hist. Avg.
70°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Atascadero
Atascadero's October 2026 forecast shows daily high temperatures ranging from 76° to 84°, with overnight lows between 44° and 53°. The average high for October is 79° with an average low of 47°. 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 Atascadero. See also: November | December | January.