S
M
T
W
T
F
S
31
88°
75°
1
93°
72°
2
90°
70°
3
86°
68°
4
87°
63°
5
89°
65°
6
90°
68°
7
92°
72°
8
91°
71°
9
85°
69°
10
89°
69°
11
88°
69°
12
90°
71°
13
91°
72°
14
90°
70°
15
88°
71°
16
87°
72°
17
88°
69°
18
89°
72°
19
90°
72°
20
91°
71°
21
89°
72°
22
89°
72°
23
91°
71°
24
90°
72°
25
90°
72°
26
91°
71°
27
91°
72°
28
92°
73°
29
91°
73°
30
91°
72°
1
90°
73°
2
86°
72°
3
86°
70°
4
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Gretna
Gretna's June 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 63° and 73°. The average high for June is 89° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Gretna. See also: July | August | September.