S
M
T
W
T
F
S
30
73°
49°
31
75°
52°
1
71°
52°
2
66°
51°
3
70°
50°
4
68°
49°
5
70°
48°
6
78°
50°
7
78°
51°
8
76°
50°
9
73°
49°
10
68°
44°
11
66°
45°
12
66°
50°
13
67°
46°
14
67°
43°
15
71°
48°
16
70°
48°
17
65°
47°
18
64°
46°
19
64°
43°
20
65°
42°
21
66°
42°
22
65°
43°
23
70°
43°
24
72°
46°
25
71°
48°
26
63°
44°
27
62°
43°
28
61°
44°
29
61°
42°
30
62°
45°
1
60°
43°
2
60°
45°
3
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yelm
Yelm's September 2026 forecast shows daily high temperatures ranging from 59° to 78°, with overnight lows between 42° and 52°. The average high for September is 68° 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 Yelm. See also: October | November | December.
