S
M
T
W
T
F
S
30
94°
74°
31
95°
74°
1
92°
73°
2
93°
75°
3
90°
74°
4
91°
73°
5
90°
73°
6
89°
75°
7
92°
74°
8
92°
73°
9
90°
72°
10
93°
74°
11
93°
74°
12
92°
73°
13
93°
73°
14
92°
71°
15
88°
72°
16
88°
72°
17
89°
71°
18
87°
72°
19
86°
72°
20
87°
71°
21
88°
72°
22
87°
71°
23
86°
68°
24
90°
67°
25
85°
67°
26
85°
68°
27
89°
65°
28
Hist. Avg.
86°
68°
29
Hist. Avg.
85°
68°
30
Hist. Avg.
85°
68°
1
Hist. Avg.
85°
68°
2
Hist. Avg.
85°
67°
3
Hist. Avg.
84°
67°
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 85° to 95°, with overnight lows between 65° and 75°. The average high for September is 90° with an average low of 72°. 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.
