S
M
T
W
T
F
S
26
82°
68°
27
87°
67°
28
85°
66°
29
84°
66°
30
82°
70°
1
83°
73°
2
84°
72°
3
76°
67°
4
87°
66°
5
83°
66°
6
84°
69°
7
83°
68°
8
85°
71°
9
87°
73°
10
87°
76°
11
88°
74°
12
87°
74°
13
86°
73°
14
87°
77°
15
87°
68°
16
86°
69°
17
89°
73°
18
92°
71°
19
93°
71°
20
93°
72°
21
92°
73°
22
91°
72°
23
90°
71°
24
89°
70°
25
90°
72°
26
89°
71°
27
89°
72°
28
89°
72°
29
88°
73°
30
90°
72°
31
89°
70°
1
88°
72°
2
88°
72°
3
89°
71°
4
90°
72°
5
91°
72°
6
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Interior County
Interior County's May 2026 forecast shows daily high temperatures ranging from 88° to 93°, with overnight lows between 70° and 73°. The average high for May is 90° with an average low of 72°. 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 Interior County. See also: June | July | August.
