S
M
T
W
T
F
S
26
71°
50°
27
72°
52°
28
75°
53°
29
75°
50°
30
73°
50°
31
71°
51°
1
73°
52°
2
74°
53°
3
72°
51°
4
73°
49°
5
74°
49°
6
75°
46°
7
70°
51°
8
75°
50°
9
70°
48°
10
76°
52°
11
78°
53°
12
Hist. Avg.
61°
53°
13
Hist. Avg.
61°
53°
14
Hist. Avg.
61°
53°
15
Hist. Avg.
61°
53°
16
Hist. Avg.
60°
52°
17
Hist. Avg.
60°
52°
18
Hist. Avg.
60°
52°
19
Hist. Avg.
60°
52°
20
Hist. Avg.
60°
52°
21
Hist. Avg.
60°
52°
22
Hist. Avg.
60°
52°
23
Hist. Avg.
60°
52°
24
Hist. Avg.
60°
52°
25
Hist. Avg.
60°
52°
26
Hist. Avg.
60°
52°
27
Hist. Avg.
59°
51°
28
Hist. Avg.
59°
51°
29
Hist. Avg.
59°
51°
30
Hist. Avg.
59°
51°
31
Hist. Avg.
59°
51°
1
Hist. Avg.
59°
51°
2
Hist. Avg.
58°
50°
3
Hist. Avg.
58°
50°
4
Hist. Avg.
58°
50°
5
Hist. Avg.
58°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Port Kirwan
Port Kirwan's August 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 46° and 53°. The average high for August is 73° with an average low of 51°. 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 Port Kirwan. See also: September | October | November.