S
M
T
W
T
F
S
26
55°
46°
27
56°
46°
28
58°
48°
29
60°
47°
30
60°
50°
31
57°
48°
1
57°
47°
2
56°
46°
3
55°
46°
4
56°
49°
5
56°
47°
6
57°
45°
7
56°
49°
8
60°
51°
9
61°
51°
10
61°
50°
11
60°
49°
12
56°
49°
13
58°
51°
14
60°
50°
15
57°
50°
16
58°
49°
17
56°
49°
18
56°
47°
19
58°
45°
20
57°
47°
21
56°
48°
22
57°
47°
23
57°
46°
24
55°
46°
25
55°
49°
26
57°
47°
27
57°
46°
28
55°
47°
29
55°
46°
30
56°
44°
31
55°
44°
1
55°
45°
2
56°
47°
3
57°
49°
4
58°
48°
5
58°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Port Heiden
Port Heiden's August 2026 forecast shows daily high temperatures ranging from 55° to 61°, with overnight lows between 44° and 51°. The average high for August is 57° with an average low of 48°. 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 Heiden. See also: September | October | November.
