S
M
T
W
T
F
S
30
78°
50°
31
80°
51°
1
83°
52°
2
84°
48°
3
85°
49°
4
84°
49°
5
83°
47°
6
78°
47°
7
82°
50°
8
80°
44°
9
75°
45°
10
77°
48°
11
76°
49°
12
77°
48°
13
74°
48°
14
75°
43°
15
73°
43°
16
75°
42°
17
81°
46°
18
81°
45°
19
Hist. Avg.
82°
50°
20
Hist. Avg.
82°
50°
21
Hist. Avg.
81°
49°
22
Hist. Avg.
81°
49°
23
Hist. Avg.
81°
49°
24
Hist. Avg.
80°
49°
25
Hist. Avg.
80°
48°
26
Hist. Avg.
79°
48°
27
Hist. Avg.
79°
48°
28
Hist. Avg.
78°
48°
29
Hist. Avg.
78°
47°
30
Hist. Avg.
77°
47°
1
Hist. Avg.
77°
47°
2
Hist. Avg.
76°
47°
3
Hist. Avg.
76°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Olalla
Olalla's September 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 42° and 52°. The average high for September is 79° with an average low of 47°. 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 Olalla. See also: October | November | December.
