S
M
T
W
T
F
S
26
97°
77°
27
91°
75°
28
88°
72°
29
88°
69°
30
84°
72°
31
79°
60°
1
84°
59°
2
84°
61°
3
86°
63°
4
86°
62°
5
83°
61°
6
84°
66°
7
92°
65°
8
91°
64°
9
93°
65°
10
92°
64°
11
96°
71°
12
86°
64°
13
80°
59°
14
81°
64°
15
84°
66°
16
88°
66°
17
89°
65°
18
85°
63°
19
83°
60°
20
85°
64°
21
79°
63°
22
84°
60°
23
81°
60°
24
81°
57°
25
79°
55°
26
79°
58°
27
82°
61°
28
86°
63°
29
83°
62°
30
77°
63°
31
81°
63°
1
86°
61°
2
85°
59°
3
82°
61°
4
86°
62°
5
86°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marne
Marne's August 2026 forecast shows daily high temperatures ranging from 77° to 96°, with overnight lows between 55° and 72°. The average high for August is 85° with an average low of 63°. 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 Marne. See also: September | October | November.