S
M
T
W
T
F
S
30
87°
65°
31
85°
66°
1
86°
65°
2
85°
65°
3
84°
64°
4
85°
64°
5
84°
64°
6
84°
65°
7
85°
63°
8
Hist. Avg.
82°
64°
9
Hist. Avg.
81°
63°
10
Hist. Avg.
81°
63°
11
Hist. Avg.
81°
63°
12
Hist. Avg.
80°
62°
13
Hist. Avg.
80°
62°
14
Hist. Avg.
80°
62°
15
Hist. Avg.
80°
62°
16
Hist. Avg.
79°
61°
17
Hist. Avg.
79°
61°
18
Hist. Avg.
79°
60°
19
Hist. Avg.
78°
60°
20
Hist. Avg.
78°
60°
21
Hist. Avg.
78°
59°
22
Hist. Avg.
77°
59°
23
Hist. Avg.
77°
59°
24
Hist. Avg.
77°
58°
25
Hist. Avg.
76°
58°
26
Hist. Avg.
76°
58°
27
Hist. Avg.
76°
57°
28
Hist. Avg.
75°
57°
29
Hist. Avg.
75°
56°
30
Hist. Avg.
74°
56°
1
Hist. Avg.
74°
56°
2
Hist. Avg.
74°
55°
3
Hist. Avg.
73°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Harrington
Harrington's September 2026 forecast shows daily high temperatures ranging from 84° to 87°, with overnight lows between 63° and 66°. The average high for September is 85° with an average low of 65°. 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 Harrington. See also: October | November | December.
