S
M
T
W
T
F
S
31
94°
63°
1
98°
68°
2
98°
70°
3
101°
71°
4
101°
72°
5
100°
72°
6
100°
74°
7
98°
74°
8
99°
69°
9
100°
70°
10
103°
72°
11
101°
77°
12
100°
78°
13
101°
81°
14
102°
79°
15
101°
81°
16
106°
79°
17
104°
80°
18
100°
77°
19
100°
74°
20
100°
76°
21
101°
70°
22
104°
74°
23
104°
78°
24
104°
82°
25
106°
82°
26
104°
83°
27
103°
79°
28
100°
78°
29
97°
74°
30
97°
74°
1
98°
70°
2
100°
69°
3
100°
71°
4
101°
79°
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 101° to 101°, with overnight lows between 79° and 79°. The average high for June is 101° with an average low of 79°. 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.