S
M
T
W
T
F
S
26
62°
50°
27
69°
47°
28
74°
52°
29
80°
54°
30
84°
57°
1
88°
59°
2
78°
55°
3
71°
54°
4
67°
54°
5
69°
54°
6
68°
55°
7
78°
55°
8
86°
53°
9
90°
54°
10
90°
57°
11
96°
67°
12
96°
68°
13
93°
58°
14
82°
61°
15
89°
55°
16
81°
53°
17
80°
59°
18
85°
51°
19
93°
54°
20
94°
60°
21
99°
59°
22
95°
54°
23
92°
54°
24
91°
53°
25
86°
54°
26
86°
54°
27
83°
53°
28
87°
56°
29
90°
50°
30
85°
51°
31
91°
57°
1
94°
59°
2
95°
59°
3
95°
58°
4
96°
60°
5
96°
60°
6
95°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gustine
Gustine's May 2026 forecast shows daily high temperatures ranging from 80° to 99°, with overnight lows between 50° and 60°. The average high for May is 90° with an average low of 56°. 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 Gustine. See also: June | July | August.
