S
M
T
W
T
F
S
30
94°
64°
31
94°
62°
1
95°
62°
2
94°
61°
3
93°
60°
4
92°
59°
5
91°
60°
6
92°
61°
7
92°
61°
8
93°
60°
9
93°
60°
10
92°
61°
11
92°
61°
12
93°
65°
13
93°
66°
14
97°
65°
15
97°
63°
16
96°
65°
17
96°
65°
18
96°
66°
19
97°
65°
20
98°
63°
21
95°
62°
22
94°
61°
23
93°
62°
24
92°
63°
25
94°
64°
26
90°
61°
27
87°
60°
28
85°
55°
29
84°
55°
30
Hist. Avg.
86°
58°
1
Hist. Avg.
85°
58°
2
Hist. Avg.
85°
57°
3
Hist. Avg.
85°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wasco
Wasco's September 2026 forecast shows daily high temperatures ranging from 84° to 98°, with overnight lows between 55° and 66°. The average high for September is 93° with an average low of 62°. 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 Wasco. See also: October | November | December.