S
M
T
W
T
F
S
26
101°
80°
27
98°
80°
28
99°
76°
29
100°
80°
30
101°
80°
1
100°
81°
2
95°
78°
3
98°
78°
4
99°
78°
5
99°
78°
6
97°
78°
7
97°
79°
8
96°
78°
9
96°
78°
10
97°
77°
11
97°
79°
12
98°
79°
13
97°
78°
14
96°
78°
15
95°
78°
16
94°
78°
17
95°
78°
18
96°
79°
19
94°
78°
20
96°
78°
21
98°
79°
22
98°
78°
23
97°
79°
24
96°
78°
25
94°
78°
26
94°
79°
27
95°
79°
28
96°
78°
29
96°
78°
30
95°
77°
31
95°
77°
1
95°
76°
2
96°
75°
3
95°
76°
4
97°
76°
5
96°
77°
6
96°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Santa Rosa City
Santa Rosa City's May 2026 forecast shows daily high temperatures ranging from 94° to 101°, with overnight lows between 75° and 81°. The average high for May is 97° with an average low of 78°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Santa Rosa City. See also: June | July | August.
