S
M
T
W
T
F
S
26
84°
55°
27
80°
56°
28
78°
56°
29
79°
52°
30
75°
49°
1
79°
52°
2
82°
54°
3
82°
56°
4
80°
52°
5
75°
50°
6
75°
51°
7
79°
54°
8
84°
58°
9
85°
59°
10
86°
59°
11
87°
60°
12
87°
60°
13
86°
59°
14
87°
60°
15
87°
60°
16
86°
59°
17
87°
61°
18
87°
61°
19
86°
60°
20
87°
59°
21
81°
56°
22
81°
58°
23
86°
61°
24
85°
57°
25
81°
54°
26
84°
58°
27
90°
62°
28
91°
62°
29
85°
55°
30
82°
56°
31
84°
60°
1
86°
62°
2
89°
63°
3
93°
62°
4
94°
63°
5
94°
65°
6
93°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Porterville
Porterville's May 2026 forecast shows daily high temperatures ranging from 75° to 94°, with overnight lows between 49° and 66°. The average high for May is 85° with an average low of 58°. 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 Porterville. See also: June | July | August.
