S
M
T
W
T
F
S
26
101°
79°
27
98°
79°
28
96°
76°
29
89°
77°
30
85°
69°
31
77°
66°
1
83°
64°
2
86°
62°
3
87°
65°
4
76°
63°
5
75°
61°
6
79°
64°
7
89°
66°
8
81°
64°
9
89°
75°
10
91°
73°
11
93°
75°
12
91°
71°
13
86°
71°
14
83°
71°
15
86°
74°
16
79°
66°
17
84°
63°
18
84°
68°
19
80°
68°
20
83°
64°
21
83°
67°
22
83°
66°
23
75°
63°
24
78°
65°
25
83°
65°
26
85°
67°
27
83°
61°
28
85°
67°
29
83°
70°
30
92°
77°
31
77°
77°
1
96°
75°
2
97°
82°
3
96°
73°
4
96°
77°
5
93°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gretna
Gretna's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Gretna. See also: September | October | November.
