S
M
T
W
T
F
S
29
63°
27°
30
74°
51°
31
82°
55°
1
87°
59°
2
86°
61°
3
83°
55°
4
84°
60°
5
70°
51°
6
66°
42°
7
66°
41°
8
59°
37°
9
66°
30°
10
78°
33°
11
83°
46°
12
81°
54°
13
84°
58°
14
87°
57°
15
91°
55°
16
89°
56°
17
86°
58°
18
89°
52°
19
69°
38°
20
68°
33°
21
67°
31°
22
83°
42°
23
87°
46°
24
87°
50°
25
87°
53°
26
63°
51°
27
71°
43°
28
65°
52°
29
69°
51°
30
68°
43°
1
66°
46°
2
56°
40°
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 56° to 69°, with overnight lows between 40° and 52°. The average high for April is 65° with an average low of 46°. 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.