S
M
T
W
T
F
S
31
94°
63°
1
98°
68°
2
102°
65°
3
104°
68°
4
103°
69°
5
102°
69°
6
101°
67°
7
101°
68°
8
102°
68°
9
104°
71°
10
106°
74°
11
108°
73°
12
108°
76°
13
106°
77°
14
107°
78°
15
103°
72°
16
99°
70°
17
98°
70°
18
98°
75°
19
101°
76°
20
106°
77°
21
107°
77°
22
107°
78°
23
106°
78°
24
108°
79°
25
107°
78°
26
106°
77°
27
107°
78°
28
104°
79°
29
103°
78°
30
104°
79°
1
105°
79°
2
103°
78°
3
104°
79°
4
106°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Santa Rosa
Santa Rosa's June 2026 forecast shows daily high temperatures ranging from 98° to 108°, with overnight lows between 65° and 80°. The average high for June is 104° with an average low of 75°. 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 Santa Rosa. See also: July | August | September.