S
M
T
W
T
F
S
30
78°
46°
31
74°
47°
1
71°
44°
2
70°
47°
3
72°
46°
4
79°
45°
5
78°
51°
6
72°
46°
7
69°
44°
8
68°
42°
9
68°
43°
10
69°
42°
11
69°
45°
12
75°
47°
13
77°
47°
14
77°
49°
15
76°
50°
16
75°
51°
17
77°
50°
18
69°
47°
19
74°
49°
20
76°
50°
21
77°
51°
22
76°
49°
23
66°
49°
24
65°
41°
25
65°
41°
26
64°
48°
27
62°
40°
28
63°
39°
29
63°
40°
30
64°
42°
1
64°
47°
2
70°
47°
3
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in East Olympia
East Olympia's September 2026 forecast shows daily high temperatures ranging from 62° to 79°, with overnight lows between 39° and 51°. The average high for September is 71° with an average low of 46°. 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 East Olympia. See also: October | November | December.
