S
M
T
W
T
F
S
30
87°
60°
31
87°
60°
1
88°
65°
2
89°
64°
3
84°
65°
4
85°
64°
5
86°
65°
6
88°
64°
7
85°
64°
8
87°
63°
9
86°
63°
10
88°
64°
11
87°
64°
12
87°
58°
13
86°
56°
14
79°
55°
15
78°
55°
16
79°
56°
17
80°
59°
18
84°
61°
19
84°
61°
20
77°
60°
21
84°
61°
22
85°
60°
23
84°
53°
24
77°
52°
25
75°
51°
26
79°
51°
27
82°
57°
28
82°
57°
29
Hist. Avg.
78°
49°
30
Hist. Avg.
78°
49°
1
Hist. Avg.
78°
49°
2
Hist. Avg.
77°
48°
3
Hist. Avg.
77°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Harriet
Harriet's September 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 51° and 65°. The average high for September is 84° with an average low of 60°. 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 Harriet. See also: October | November | December.
