S
M
T
W
T
F
S
26
88°
72°
27
88°
75°
28
90°
73°
29
84°
68°
30
70°
63°
1
63°
54°
2
73°
50°
3
79°
46°
4
79°
48°
5
81°
64°
6
81°
63°
7
77°
57°
8
73°
63°
9
84°
66°
10
88°
68°
11
75°
63°
12
84°
59°
13
89°
59°
14
91°
65°
15
87°
68°
16
86°
70°
17
85°
75°
18
86°
73°
19
86°
70°
20
81°
71°
21
85°
70°
22
84°
66°
23
84°
64°
24
86°
66°
25
87°
69°
26
84°
66°
27
84°
70°
28
86°
69°
29
87°
70°
30
81°
69°
31
81°
69°
1
82°
68°
2
83°
70°
3
86°
70°
4
86°
69°
5
84°
70°
6
82°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hillister
Hillister's May 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 59° and 75°. The average high for May is 85° with an average low of 69°. 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 Hillister. See also: June | July | August.
