S
M
T
W
T
F
S
26
74°
57°
27
73°
57°
28
72°
56°
29
67°
52°
30
69°
57°
31
68°
57°
1
72°
56°
2
70°
54°
3
72°
57°
4
69°
57°
5
72°
56°
6
72°
57°
7
71°
57°
8
72°
56°
9
73°
57°
10
73°
56°
11
72°
57°
12
74°
58°
13
72°
55°
14
71°
57°
15
72°
56°
16
69°
56°
17
71°
55°
18
70°
56°
19
71°
54°
20
71°
54°
21
70°
55°
22
71°
55°
23
71°
54°
24
70°
54°
25
71°
53°
26
67°
52°
27
66°
50°
28
65°
54°
29
66°
53°
30
65°
52°
31
65°
53°
1
66°
54°
2
67°
52°
3
66°
50°
4
64°
51°
5
64°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Horsham
Horsham's August 2026 forecast shows daily high temperatures ranging from 64° to 74°, with overnight lows between 50° and 58°. The average high for August is 70° with an average low of 55°. 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 Horsham. See also: September | October | November.
