S
M
T
W
T
F
S
26
85°
68°
27
89°
72°
28
87°
67°
29
83°
68°
30
84°
72°
31
89°
74°
1
90°
71°
2
86°
74°
3
90°
75°
4
88°
72°
5
88°
74°
6
91°
77°
7
94°
75°
8
90°
74°
9
94°
74°
10
93°
74°
11
88°
72°
12
84°
69°
13
88°
73°
14
86°
68°
15
84°
69°
16
87°
74°
17
86°
71°
18
87°
68°
19
86°
70°
20
87°
70°
21
89°
71°
22
89°
70°
23
87°
69°
24
82°
67°
25
83°
71°
26
87°
72°
27
89°
73°
28
89°
73°
29
88°
70°
30
82°
66°
31
81°
70°
1
81°
71°
2
82°
70°
3
82°
69°
4
84°
71°
5
86°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Dundalk
Dundalk's August 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 66° and 74°. The average high for August is 86° with an average low of 70°. 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 Dundalk. See also: September | October | November.