S
M
T
W
T
F
S
30
73°
49°
31
80°
47°
1
69°
50°
2
70°
52°
3
69°
48°
4
72°
48°
5
72°
48°
6
76°
52°
7
73°
51°
8
73°
50°
9
78°
51°
10
77°
50°
11
70°
49°
12
73°
51°
13
72°
48°
14
76°
49°
15
73°
50°
16
71°
47°
17
65°
48°
18
65°
44°
19
65°
43°
20
67°
50°
21
66°
47°
22
64°
46°
23
64°
42°
24
63°
42°
25
63°
41°
26
67°
43°
27
71°
46°
28
72°
47°
29
71°
48°
30
71°
48°
1
70°
49°
2
71°
49°
3
70°
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 78°, with overnight lows between 41° and 52°. The average high for September is 70° 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.
