S
M
T
W
T
F
S
31
71°
36°
1
77°
37°
2
82°
49°
3
88°
52°
4
85°
49°
5
80°
49°
6
76°
46°
7
74°
47°
8
78°
50°
9
80°
52°
10
83°
53°
11
85°
52°
12
86°
53°
13
85°
52°
14
86°
55°
15
82°
50°
16
85°
55°
17
85°
55°
18
84°
54°
19
84°
54°
20
83°
53°
21
84°
54°
22
85°
54°
23
85°
53°
24
84°
55°
25
85°
54°
26
84°
54°
27
83°
53°
28
81°
54°
29
81°
55°
30
84°
54°
1
85°
55°
2
85°
56°
3
86°
56°
4
86°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Atascadero
Atascadero's June 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 46° and 56°. The average high for June is 83° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Atascadero. See also: July | August | September.