S
M
T
W
T
F
S
30
82°
61°
31
82°
52°
1
79°
52°
2
82°
50°
3
75°
57°
4
84°
55°
5
82°
64°
6
N/A
7
78°
58°
8
75°
55°
9
71°
52°
10
84°
54°
11
73°
48°
12
63°
43°
13
63°
44°
14
64°
45°
15
71°
50°
16
71°
49°
17
66°
44°
18
64°
43°
19
63°
46°
20
69°
43°
21
68°
50°
22
72°
51°
23
72°
49°
24
62°
48°
25
69°
48°
26
70°
49°
27
70°
49°
28
71°
47°
29
62°
46°
30
57°
44°
1
57°
42°
2
56°
39°
3
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Harvey
Harvey's September 2026 forecast shows daily high temperatures ranging from 55° to 84°, with overnight lows between 39° and 58°. The average high for September is 67° with an average low of 47°. 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 Harvey. See also: October | November | December.
