S
M
T
W
T
F
S
30
88°
58°
31
86°
59°
1
78°
57°
2
83°
56°
3
84°
61°
4
80°
58°
5
87°
58°
6
87°
56°
7
86°
57°
8
91°
60°
9
92°
61°
10
89°
59°
11
88°
58°
12
87°
59°
13
87°
58°
14
88°
59°
15
90°
55°
16
93°
59°
17
92°
59°
18
85°
59°
19
88°
58°
20
91°
56°
21
92°
58°
22
92°
58°
23
90°
57°
24
88°
56°
25
88°
57°
26
91°
57°
27
91°
56°
28
90°
57°
29
90°
57°
30
89°
56°
1
90°
57°
2
90°
56°
3
88°
55°
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 80° to 93°, with overnight lows between 55° and 61°. The average high for September is 89° with an average low of 58°. 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.
