S
M
T
W
T
F
S
26
70°
53°
27
69°
55°
28
71°
55°
29
70°
54°
30
69°
52°
31
70°
55°
1
69°
53°
2
70°
52°
3
69°
51°
4
70°
52°
5
72°
56°
6
73°
57°
7
73°
57°
8
70°
52°
9
68°
52°
10
68°
51°
11
69°
51°
12
68°
53°
13
68°
54°
14
69°
53°
15
68°
55°
16
68°
53°
17
69°
54°
18
72°
55°
19
71°
56°
20
72°
55°
21
71°
56°
22
72°
56°
23
71°
55°
24
71°
55°
25
70°
54°
26
70°
54°
27
69°
52°
28
70°
54°
29
69°
54°
30
70°
51°
31
69°
49°
1
68°
51°
2
68°
53°
3
69°
54°
4
68°
50°
5
65°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ancaster
Ancaster's August 2026 forecast shows daily high temperatures ranging from 65° to 73°, with overnight lows between 49° and 57°. The average high for August is 70° with an average low of 54°. 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 Ancaster. See also: September | October | November.
