S
M
T
W
T
F
S
30
85°
63°
31
86°
63°
1
85°
62°
2
85°
61°
3
83°
59°
4
83°
62°
5
85°
62°
6
86°
61°
7
86°
62°
8
85°
62°
9
86°
63°
10
86°
62°
11
85°
62°
12
86°
63°
13
86°
63°
14
84°
54°
15
75°
54°
16
78°
59°
17
76°
54°
18
82°
50°
19
74°
49°
20
74°
50°
21
78°
50°
22
82°
51°
23
82°
53°
24
77°
49°
25
73°
55°
26
80°
55°
27
76°
54°
28
80°
52°
29
72°
46°
30
71°
45°
1
73°
49°
2
79°
48°
3
79°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Harcourt
Harcourt's September 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 45° and 63°. The average high for September is 81° with an average low of 56°. 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 Harcourt. See also: October | November | December.