S
M
T
W
T
F
S
30
82°
68°
31
85°
63°
1
81°
62°
2
83°
65°
3
89°
68°
4
91°
71°
5
90°
68°
6
85°
60°
7
75°
61°
8
77°
57°
9
76°
56°
10
76°
54°
11
73°
50°
12
75°
53°
13
71°
52°
14
72°
49°
15
77°
55°
16
74°
54°
17
75°
56°
18
73°
54°
19
71°
53°
20
75°
54°
21
76°
53°
22
74°
54°
23
74°
54°
24
76°
55°
25
75°
54°
26
74°
52°
27
75°
53°
28
75°
52°
29
74°
51°
30
74°
52°
1
73°
53°
2
73°
51°
3
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Barrett
Barrett's September 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 49° and 71°. The average high for September is 76° 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 Barrett. See also: October | November | December.
