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
71°
48°
19
76°
52°
20
77°
56°
21
76°
55°
22
75°
54°
23
79°
53°
24
72°
55°
25
70°
54°
26
74°
49°
27
80°
40°
28
68°
45°
29
71°
50°
30
70°
48°
1
74°
54°
2
76°
54°
3
80°
53°
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 68° to 88°, with overnight lows between 40° and 65°. The average high for September is 79° with an average low of 56°. 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.
