S
M
T
W
T
F
S
30
90°
58°
31
91°
56°
1
90°
58°
2
91°
59°
3
95°
55°
4
90°
54°
5
89°
56°
6
90°
55°
7
89°
55°
8
90°
59°
9
90°
56°
10
89°
55°
11
91°
53°
12
88°
57°
13
Hist. Avg.
90°
57°
14
Hist. Avg.
90°
57°
15
Hist. Avg.
90°
56°
16
Hist. Avg.
90°
56°
17
Hist. Avg.
89°
56°
18
Hist. Avg.
89°
56°
19
Hist. Avg.
89°
56°
20
Hist. Avg.
88°
56°
21
Hist. Avg.
88°
55°
22
Hist. Avg.
88°
55°
23
Hist. Avg.
88°
55°
24
Hist. Avg.
87°
55°
25
Hist. Avg.
87°
54°
26
Hist. Avg.
87°
54°
27
Hist. Avg.
86°
54°
28
Hist. Avg.
86°
54°
29
Hist. Avg.
86°
53°
30
Hist. Avg.
85°
53°
1
Hist. Avg.
85°
53°
2
Hist. Avg.
85°
53°
3
Hist. Avg.
84°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Barrett
Barrett's September 2026 forecast shows daily high temperatures ranging from 88° to 95°, with overnight lows between 53° and 59°. The average high for September is 90° 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.
