S
M
T
W
T
F
S
30
90°
64°
31
91°
66°
1
92°
67°
2
90°
68°
3
87°
67°
4
86°
66°
5
89°
67°
6
88°
66°
7
91°
66°
8
90°
66°
9
90°
65°
10
89°
66°
11
91°
67°
12
90°
65°
13
89°
63°
14
84°
60°
15
83°
59°
16
83°
60°
17
84°
63°
18
87°
63°
19
87°
62°
20
82°
63°
21
84°
62°
22
87°
63°
23
87°
59°
24
81°
56°
25
80°
55°
26
80°
57°
27
80°
54°
28
Hist. Avg.
82°
59°
29
Hist. Avg.
82°
58°
30
Hist. Avg.
82°
58°
1
Hist. Avg.
81°
58°
2
Hist. Avg.
81°
57°
3
Hist. Avg.
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lacey
Lacey's September 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 54° and 68°. The average high for September is 87° with an average low of 63°. 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 Lacey. See also: October | November | December.