S
M
T
W
T
F
S
26
84°
46°
27
85°
46°
28
84°
45°
29
85°
46°
30
87°
47°
31
93°
50°
1
89°
43°
2
78°
42°
3
83°
44°
4
89°
51°
5
93°
53°
6
90°
42°
7
89°
43°
8
88°
42°
9
87°
43°
10
85°
41°
11
87°
44°
12
86°
43°
13
88°
43°
14
83°
42°
15
87°
49°
16
80°
47°
17
82°
47°
18
86°
48°
19
86°
48°
20
85°
47°
21
81°
46°
22
81°
46°
23
84°
45°
24
79°
44°
25
75°
42°
26
84°
46°
27
85°
47°
28
85°
47°
29
83°
46°
30
81°
45°
31
81°
45°
1
76°
41°
2
71°
38°
3
72°
41°
4
79°
44°
5
80°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lostine
Lostine's August 2026 forecast shows daily high temperatures ranging from 71° to 93°, with overnight lows between 38° and 53°. The average high for August is 83° with an average low of 45°. 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 Lostine. See also: September | October | November.
