S
M
T
W
T
F
S
26
63°
49°
27
71°
45°
28
76°
39°
29
81°
42°
30
82°
42°
1
80°
47°
2
67°
52°
3
67°
52°
4
69°
48°
5
68°
51°
6
80°
54°
7
78°
52°
8
81°
51°
9
85°
45°
10
83°
50°
11
87°
47°
12
77°
50°
13
83°
46°
14
86°
45°
15
89°
47°
16
80°
53°
17
76°
47°
18
87°
56°
19
92°
42°
20
88°
51°
21
89°
49°
22
79°
51°
23
73°
47°
24
76°
46°
25
79°
52°
26
81°
53°
27
85°
55°
28
88°
54°
29
83°
53°
30
81°
52°
31
85°
53°
1
85°
53°
2
83°
52°
3
81°
52°
4
78°
52°
5
78°
55°
6
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Simi
Simi's May 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 46° and 55°. The average high for May is 82° 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 Simi. See also: June | July | August.
