S
M
T
W
T
F
S
30
90°
72°
31
94°
71°
1
94°
71°
2
97°
71°
3
99°
73°
4
98°
73°
5
100°
71°
6
99°
72°
7
90°
74°
8
91°
69°
9
91°
70°
10
90°
71°
11
87°
69°
12
91°
67°
13
90°
69°
14
90°
68°
15
90°
66°
16
87°
63°
17
87°
67°
18
88°
64°
19
86°
63°
20
83°
58°
21
88°
63°
22
85°
62°
23
85°
63°
24
86°
63°
25
86°
62°
26
85°
62°
27
86°
61°
28
85°
62°
29
85°
62°
30
84°
61°
1
84°
59°
2
82°
54°
3
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Harvest
Harvest's September 2026 forecast shows daily high temperatures ranging from 73° to 91°, with overnight lows between 50° and 74°. The average high for September is 86° with an average low of 64°. 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 Harvest. See also: October | November | December.
