S
M
T
W
T
F
S
26
79°
54°
27
79°
53°
28
80°
53°
29
84°
55°
30
85°
55°
31
84°
54°
1
83°
55°
2
83°
54°
3
84°
54°
4
81°
53°
5
78°
54°
6
80°
51°
7
84°
51°
8
83°
53°
9
84°
54°
10
85°
54°
11
84°
53°
12
82°
53°
13
82°
52°
14
77°
52°
15
77°
50°
16
76°
48°
17
76°
47°
18
77°
47°
19
76°
46°
20
76°
49°
21
86°
50°
22
85°
49°
23
83°
49°
24
84°
50°
25
82°
46°
26
78°
47°
27
78°
45°
28
76°
45°
29
74°
46°
30
75°
46°
31
77°
48°
1
78°
48°
2
80°
43°
3
74°
40°
4
74°
40°
5
75°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lyman
Lyman's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 40° and 55°. The average high for August is 80° with an average low of 50°. 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 Lyman. See also: September | October | November.