S
M
T
W
T
F
S
30
85°
69°
31
84°
72°
1
86°
71°
2
86°
67°
3
84°
67°
4
82°
68°
5
82°
66°
6
83°
67°
7
83°
69°
8
84°
70°
9
82°
71°
10
86°
70°
11
86°
70°
12
85°
69°
13
86°
71°
14
85°
71°
15
84°
70°
16
85°
70°
17
86°
71°
18
84°
69°
19
83°
68°
20
82°
67°
21
81°
68°
22
82°
65°
23
Hist. Avg.
79°
66°
24
Hist. Avg.
79°
65°
25
Hist. Avg.
78°
65°
26
Hist. Avg.
78°
64°
27
Hist. Avg.
78°
64°
28
Hist. Avg.
78°
64°
29
Hist. Avg.
77°
63°
30
Hist. Avg.
77°
63°
1
Hist. Avg.
77°
63°
2
Hist. Avg.
76°
62°
3
Hist. Avg.
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Harbinger
Harbinger's September 2026 forecast shows daily high temperatures ranging from 81° to 86°, with overnight lows between 65° and 72°. The average high for September is 84° with an average low of 69°. 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 Harbinger. See also: October | November | December.
