S
M
T
W
T
F
S
30
90°
64°
31
92°
68°
1
95°
70°
2
96°
70°
3
96°
69°
4
92°
69°
5
86°
65°
6
84°
66°
7
84°
63°
8
82°
61°
9
81°
60°
10
87°
62°
11
83°
61°
12
81°
59°
13
83°
57°
14
82°
58°
15
83°
62°
16
79°
62°
17
80°
61°
18
79°
57°
19
82°
61°
20
82°
61°
21
83°
60°
22
83°
60°
23
82°
61°
24
83°
60°
25
82°
59°
26
80°
58°
27
81°
59°
28
80°
58°
29
81°
57°
30
80°
57°
1
79°
56°
2
78°
55°
3
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Redmond
Redmond's September 2026 forecast shows daily high temperatures ranging from 78° to 96°, with overnight lows between 55° and 70°. The average high for September is 83° with an average low of 61°. 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 Redmond. See also: October | November | December.
