S
M
T
W
T
F
S
26
81°
66°
27
84°
67°
28
85°
64°
29
81°
58°
30
77°
58°
31
77°
57°
1
79°
57°
2
78°
58°
3
77°
57°
4
78°
61°
5
80°
65°
6
79°
65°
7
78°
64°
8
82°
65°
9
77°
63°
10
80°
60°
11
81°
58°
12
82°
58°
13
83°
59°
14
83°
63°
15
82°
63°
16
82°
58°
17
81°
55°
18
76°
56°
19
76°
60°
20
80°
62°
21
82°
63°
22
84°
62°
23
84°
63°
24
83°
61°
25
80°
62°
26
82°
54°
27
75°
54°
28
74°
53°
29
Hist. Avg.
77°
58°
30
Hist. Avg.
77°
58°
31
Hist. Avg.
77°
58°
1
Hist. Avg.
76°
57°
2
Hist. Avg.
76°
57°
3
Hist. Avg.
76°
57°
4
Hist. Avg.
76°
57°
5
Hist. Avg.
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Dunkirk
Dunkirk's August 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 53° and 67°. The average high for August is 80° with an average low of 60°. 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 Dunkirk. See also: September | October | November.