S
M
T
W
T
F
S
26
61°
50°
27
68°
44°
28
73°
44°
29
76°
46°
30
76°
47°
1
75°
49°
2
68°
49°
3
70°
49°
4
69°
50°
5
70°
49°
6
71°
48°
7
75°
51°
8
73°
51°
9
72°
52°
10
75°
50°
11
73°
47°
12
76°
51°
13
77°
50°
14
77°
51°
15
76°
51°
16
75°
50°
17
76°
48°
18
69°
47°
19
69°
45°
20
70°
46°
21
70°
49°
22
72°
48°
23
77°
51°
24
78°
52°
25
78°
52°
26
77°
51°
27
77°
52°
28
78°
50°
29
75°
48°
30
74°
48°
31
71°
46°
1
71°
46°
2
72°
49°
3
72°
49°
4
73°
50°
5
73°
49°
6
74°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rohnert Park
Rohnert Park's May 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 44° and 52°. The average high for May is 74° with an average low of 49°. 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 Rohnert Park. See also: June | July | August.