S
M
T
W
T
F
S
31
90°
78°
1
88°
79°
2
87°
73°
3
84°
73°
4
84°
76°
5
89°
72°
6
86°
76°
7
89°
79°
8
89°
79°
9
91°
76°
10
92°
79°
11
91°
78°
12
92°
79°
13
90°
80°
14
93°
81°
15
90°
75°
16
87°
75°
17
90°
77°
18
89°
80°
19
93°
78°
20
89°
78°
21
90°
79°
22
93°
78°
23
93°
77°
24
93°
76°
25
93°
78°
26
91°
77°
27
92°
78°
28
92°
79°
29
91°
79°
30
92°
78°
1
90°
77°
2
91°
76°
3
88°
78°
4
89°
77°
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 88° to 93°, with overnight lows between 76° and 79°. The average high for June is 91° with an average low of 78°. 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.