S
M
T
W
T
F
S
26
68°
56°
27
68°
54°
28
69°
55°
29
72°
57°
30
73°
56°
31
73°
56°
1
74°
57°
2
73°
57°
3
73°
56°
4
74°
55°
5
73°
56°
6
74°
57°
7
73°
56°
8
74°
57°
9
73°
55°
10
72°
54°
11
73°
58°
12
74°
57°
13
74°
58°
14
75°
58°
15
75°
57°
16
74°
58°
17
75°
57°
18
73°
56°
19
73°
56°
20
74°
57°
21
73°
57°
22
73°
55°
23
72°
56°
24
68°
55°
25
68°
50°
26
67°
53°
27
67°
52°
28
69°
52°
29
67°
55°
30
67°
55°
31
69°
50°
1
69°
49°
2
66°
53°
3
66°
48°
4
71°
48°
5
68°
50°
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 66° to 75°, with overnight lows between 48° and 58°. The average high for August is 71° 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.
