S
M
T
W
T
F
S
26
80°
55°
27
80°
56°
28
79°
56°
29
81°
55°
30
80°
56°
31
73°
50°
1
72°
49°
2
77°
52°
3
80°
54°
4
80°
54°
5
81°
54°
6
80°
56°
7
77°
49°
8
81°
50°
9
77°
48°
10
79°
52°
11
81°
57°
12
82°
56°
13
77°
56°
14
76°
49°
15
76°
48°
16
77°
47°
17
73°
53°
18
73°
49°
19
74°
46°
20
72°
49°
21
72°
48°
22
73°
50°
23
79°
53°
24
75°
53°
25
70°
46°
26
71°
52°
27
74°
54°
28
80°
47°
29
79°
47°
30
78°
51°
31
79°
55°
1
80°
54°
2
80°
55°
3
79°
48°
4
78°
49°
5
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Yelm
Yelm's August 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 46° and 57°. The average high for August is 77° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Yelm. See also: September | October | November.