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
76°
47°
19
74°
49°
20
72°
46°
21
72°
51°
22
71°
44°
23
71°
45°
24
69°
48°
25
70°
46°
26
69°
45°
27
69°
46°
28
68°
47°
29
67°
46°
30
68°
46°
1
66°
45°
2
63°
48°
3
62°
41°
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 76°, with overnight lows between 41° and 51°. The average high for September is 69° 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.
