S
M
T
W
T
F
S
29
75°
59°
30
86°
55°
31
90°
61°
1
90°
59°
2
90°
59°
3
88°
66°
4
88°
64°
5
88°
63°
6
68°
59°
7
67°
57°
8
72°
56°
9
77°
53°
10
83°
54°
11
86°
54°
12
85°
54°
13
84°
56°
14
86°
57°
15
85°
56°
16
87°
58°
17
86°
58°
18
87°
59°
19
86°
61°
20
89°
54°
21
83°
59°
22
84°
58°
23
84°
59°
24
83°
59°
25
84°
60°
26
85°
60°
27
85°
59°
28
84°
60°
29
83°
60°
30
82°
59°
1
80°
60°
2
85°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in O'Brien
O'Brien's April 2026 forecast shows daily high temperatures ranging from 67° to 89°, with overnight lows between 53° and 61°. The average high for April is 83° 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 April weather will actually feel in O'Brien. See also: May | June | July.