S
M
T
W
T
F
S
30
73°
49°
31
80°
47°
1
69°
50°
2
70°
52°
3
68°
52°
4
72°
51°
5
73°
46°
6
76°
48°
7
74°
56°
8
76°
46°
9
83°
46°
10
73°
50°
11
69°
47°
12
67°
49°
13
62°
54°
14
69°
55°
15
68°
51°
16
76°
45°
17
79°
47°
18
71°
47°
19
68°
45°
20
75°
45°
21
70°
47°
22
71°
49°
23
70°
46°
24
65°
47°
25
62°
45°
26
66°
41°
27
69°
40°
28
68°
52°
29
67°
46°
30
68°
50°
1
68°
45°
2
65°
42°
3
66°
43°
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 62° to 69°, with overnight lows between 40° and 52°. The average high for September is 67° with an average low of 45°. 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.
