S
M
T
W
T
F
S
26
62°
50°
27
69°
48°
28
75°
48°
29
78°
48°
30
81°
47°
1
72°
48°
2
66°
51°
3
67°
54°
4
66°
47°
5
66°
51°
6
78°
54°
7
77°
52°
8
77°
52°
9
80°
49°
10
76°
53°
11
87°
49°
12
75°
51°
13
71°
54°
14
82°
50°
15
80°
49°
16
73°
53°
17
78°
49°
18
86°
65°
19
90°
51°
20
89°
53°
21
86°
51°
22
78°
48°
23
70°
54°
24
69°
53°
25
61°
51°
26
69°
49°
27
73°
54°
28
65°
55°
29
65°
49°
30
76°
49°
31
79°
50°
1
83°
52°
2
79°
51°
3
78°
52°
4
78°
54°
5
77°
52°
6
77°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Greenbrae
Greenbrae's May 2026 forecast shows daily high temperatures ranging from 61° to 83°, with overnight lows between 49° and 55°. The average high for May is 74° with an average low of 52°. 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 Greenbrae. See also: June | July | August.
