S
M
T
W
T
F
S
30
71°
55°
31
76°
54°
1
66°
57°
2
70°
55°
3
68°
53°
4
70°
53°
5
70°
52°
6
74°
53°
7
70°
57°
8
74°
55°
9
78°
54°
10
71°
56°
11
69°
54°
12
70°
55°
13
68°
55°
14
71°
52°
15
73°
50°
16
79°
54°
17
81°
54°
18
81°
55°
19
75°
54°
20
71°
53°
21
70°
54°
22
70°
53°
23
72°
54°
24
68°
52°
25
63°
55°
26
64°
53°
27
63°
49°
28
62°
48°
29
61°
46°
30
61°
46°
1
62°
54°
2
64°
53°
3
62°
47°
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 61° to 81°, with overnight lows between 46° and 55°. The average high for September is 69° with an average low of 52°. 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.
