S
M
T
W
T
F
S
30
68°
65°
31
76°
68°
1
88°
69°
2
94°
70°
3
80°
63°
4
76°
63°
5
74°
62°
6
73°
58°
7
77°
54°
8
81°
67°
9
79°
63°
10
72°
54°
11
76°
55°
12
82°
63°
13
75°
58°
14
72°
65°
15
76°
58°
16
69°
55°
17
70°
55°
18
64°
51°
19
65°
52°
20
64°
49°
21
65°
51°
22
66°
59°
23
68°
58°
24
70°
59°
25
74°
59°
26
73°
57°
27
69°
57°
28
73°
59°
29
74°
60°
30
74°
59°
1
73°
58°
2
70°
54°
3
61°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Huron
Port Huron's September 2026 forecast shows daily high temperatures ranging from 61° to 82°, with overnight lows between 49° and 67°. The average high for September is 71° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Port Huron. See also: October | November | December.
