S
M
T
W
T
F
S
29
82°
71°
30
84°
71°
31
88°
72°
1
87°
71°
2
87°
71°
3
88°
74°
4
91°
73°
5
87°
73°
6
86°
73°
7
75°
67°
8
80°
68°
9
81°
70°
10
84°
69°
11
83°
65°
12
86°
65°
13
83°
67°
14
83°
66°
15
82°
68°
16
86°
67°
17
84°
70°
18
87°
71°
19
85°
68°
20
85°
69°
21
85°
68°
22
84°
69°
23
85°
70°
24
84°
66°
25
84°
69°
26
83°
70°
27
82°
70°
28
84°
69°
29
85°
70°
30
85°
70°
1
83°
69°
2
84°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Treasure Island
Treasure Island's April 2026 forecast shows daily high temperatures ranging from 82° to 87°, with overnight lows between 65° and 71°. The average high for April is 84° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Treasure Island. See also: May | June | July.