S
M
T
W
T
F
S
30
72°
46°
31
76°
49°
1
77°
52°
2
77°
51°
3
76°
51°
4
76°
52°
5
75°
50°
6
75°
48°
7
76°
50°
8
73°
52°
9
76°
52°
10
74°
53°
11
68°
49°
12
67°
45°
13
72°
47°
14
66°
52°
15
71°
48°
16
75°
52°
17
74°
50°
18
73°
49°
19
73°
50°
20
74°
51°
21
75°
51°
22
72°
47°
23
64°
44°
24
64°
48°
25
64°
44°
26
69°
47°
27
71°
45°
28
72°
40°
29
63°
41°
30
64°
39°
1
69°
38°
2
67°
44°
3
64°
48°
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 63° to 77°, with overnight lows between 38° and 53°. The average high for September is 71° with an average low of 48°. 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.
