S
M
T
W
T
F
S
26
73°
54°
27
72°
53°
28
74°
57°
29
74°
57°
30
72°
56°
31
71°
53°
1
71°
52°
2
69°
51°
3
71°
54°
4
74°
57°
5
74°
58°
6
73°
57°
7
72°
55°
8
73°
54°
9
73°
57°
10
72°
56°
11
74°
56°
12
75°
57°
13
75°
57°
14
74°
56°
15
73°
57°
16
74°
56°
17
74°
55°
18
74°
53°
19
73°
49°
20
69°
50°
21
68°
48°
22
68°
48°
23
69°
52°
24
68°
49°
25
68°
49°
26
69°
52°
27
68°
54°
28
68°
49°
29
67°
50°
30
68°
49°
31
67°
48°
1
70°
49°
2
71°
52°
3
71°
52°
4
69°
47°
5
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hemel Hempstead
Hemel Hempstead's August 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 46° and 58°. The average high for August is 71° with an average low of 53°. 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 Hemel Hempstead. See also: September | October | November.