S
M
T
W
T
F
S
30
88°
64°
31
88°
64°
1
87°
63°
2
88°
65°
3
88°
65°
4
87°
64°
5
88°
63°
6
88°
63°
7
87°
61°
8
77°
60°
9
81°
60°
10
84°
59°
11
85°
60°
12
85°
60°
13
82°
58°
14
71°
54°
15
72°
57°
16
72°
56°
17
77°
52°
18
87°
54°
19
85°
44°
20
82°
43°
21
66°
42°
22
69°
45°
23
72°
53°
24
74°
54°
25
79°
54°
26
78°
55°
27
79°
52°
28
80°
47°
29
70°
38°
30
66°
38°
1
63°
39°
2
65°
47°
3
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thurston
Thurston's September 2026 forecast shows daily high temperatures ranging from 63° to 88°, with overnight lows between 38° and 65°. The average high for September is 79° with an average low of 54°. 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 Thurston. See also: October | November | December.
