S
M
T
W
T
F
S
29
72°
58°
30
74°
59°
31
77°
56°
1
80°
59°
2
81°
59°
3
73°
61°
4
68°
60°
5
68°
59°
6
66°
54°
7
87°
56°
8
82°
57°
9
85°
62°
10
84°
62°
11
74°
54°
12
67°
51°
13
72°
53°
14
75°
49°
15
74°
51°
16
77°
53°
17
77°
51°
18
65°
51°
19
68°
50°
20
N/A
21
71°
55°
22
72°
53°
23
73°
52°
24
75°
50°
25
78°
51°
26
77°
52°
27
76°
52°
28
76°
52°
29
77°
53°
30
74°
54°
1
71°
52°
2
70°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Castlereagh
Castlereagh's April 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 50° and 55°. The average high for April is 74° 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 April weather will actually feel in Castlereagh. See also: May | June | July.
