S
M
T
W
T
F
S
30
77°
34°
31
86°
33°
1
77°
49°
2
64°
44°
3
66°
41°
4
63°
41°
5
70°
42°
6
73°
42°
7
73°
40°
8
75°
41°
9
78°
44°
10
81°
44°
11
86°
46°
12
82°
45°
13
79°
44°
14
83°
36°
15
83°
47°
16
75°
44°
17
71°
38°
18
72°
38°
19
74°
43°
20
71°
45°
21
70°
38°
22
71°
40°
23
73°
41°
24
66°
38°
25
65°
38°
26
67°
39°
27
68°
44°
28
65°
42°
29
67°
39°
30
70°
42°
1
67°
40°
2
64°
34°
3
65°
39°
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 63° to 86°, with overnight lows between 34° and 49°. The average high for September is 72° with an average low of 41°. 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.
