S
M
T
W
T
F
S
26
71°
55°
27
70°
55°
28
74°
56°
29
72°
55°
30
69°
56°
31
71°
56°
1
69°
53°
2
70°
51°
3
69°
52°
4
71°
53°
5
73°
56°
6
74°
56°
7
74°
57°
8
73°
56°
9
70°
52°
10
69°
50°
11
69°
51°
12
70°
55°
13
69°
56°
14
69°
54°
15
70°
54°
16
68°
53°
17
71°
54°
18
72°
55°
19
72°
54°
20
73°
54°
21
71°
55°
22
72°
55°
23
72°
54°
24
71°
54°
25
72°
53°
26
71°
54°
27
70°
53°
28
70°
54°
29
69°
53°
30
71°
51°
31
70°
50°
1
69°
51°
2
69°
52°
3
68°
53°
4
71°
51°
5
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Thatcham
Thatcham's August 2026 forecast shows daily high temperatures ranging from 67° to 74°, with overnight lows between 50° and 57°. The average high for August is 71° 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 Thatcham. See also: September | October | November.