S
M
T
W
T
F
S
30
78°
51°
31
79°
55°
1
80°
54°
2
80°
55°
3
79°
48°
4
78°
49°
5
77°
56°
6
78°
52°
7
79°
52°
8
76°
44°
9
69°
49°
10
71°
43°
11
74°
44°
12
72°
45°
13
67°
45°
14
67°
43°
15
68°
41°
16
68°
43°
17
67°
47°
18
65°
43°
19
66°
44°
20
65°
47°
21
70°
44°
22
71°
42°
23
71°
47°
24
64°
48°
25
Hist. Avg.
66°
50°
26
Hist. Avg.
66°
49°
27
Hist. Avg.
66°
49°
28
Hist. Avg.
65°
49°
29
Hist. Avg.
65°
49°
30
Hist. Avg.
65°
49°
1
Hist. Avg.
64°
49°
2
Hist. Avg.
64°
48°
3
Hist. Avg.
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Yelm
Yelm's September 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 41° and 56°. The average high for September is 72° with an average low of 47°. 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.
