S
M
T
W
T
F
S
29
76°
44°
30
89°
43°
31
76°
46°
1
48°
37°
2
47°
39°
3
41°
38°
4
48°
35°
5
65°
30°
6
50°
34°
7
49°
32°
8
73°
46°
9
49°
41°
10
55°
47°
11
72°
63°
12
78°
58°
13
84°
58°
14
83°
53°
15
73°
52°
16
81°
52°
17
60°
40°
18
61°
42°
19
74°
48°
20
73°
53°
21
74°
50°
22
67°
43°
23
65°
41°
24
63°
46°
25
62°
43°
26
60°
47°
27
59°
48°
28
65°
50°
29
70°
49°
30
71°
47°
1
62°
41°
2
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Gretna
Gretna's April 2026 forecast shows daily high temperatures ranging from 55° to 84°, with overnight lows between 40° and 63°. The average high for April is 68° with an average low of 48°. 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 Gretna. See also: May | June | July.