S
M
T
W
T
F
S
26
85°
49°
27
86°
51°
28
90°
53°
29
91°
51°
30
90°
53°
31
90°
53°
1
88°
52°
2
89°
56°
3
90°
59°
4
90°
51°
5
89°
58°
6
90°
52°
7
88°
54°
8
81°
49°
9
77°
45°
10
77°
48°
11
80°
47°
12
79°
55°
13
86°
48°
14
78°
48°
15
78°
45°
16
77°
47°
17
78°
46°
18
79°
51°
19
80°
50°
20
76°
50°
21
76°
46°
22
77°
43°
23
75°
50°
24
77°
46°
25
78°
44°
26
78°
51°
27
84°
51°
28
83°
46°
29
75°
45°
30
79°
51°
31
81°
50°
1
72°
49°
2
72°
42°
3
71°
47°
4
74°
49°
5
70°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Coldstream
Coldstream's August 2026 forecast shows daily high temperatures ranging from 70° to 91°, with overnight lows between 42° and 59°. The average high for August is 81° with an average low of 49°. 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 Coldstream. See also: September | October | November.