S
M
T
W
T
F
S
26
82°
56°
27
81°
55°
28
76°
59°
29
79°
60°
30
81°
61°
31
84°
60°
1
75°
59°
2
74°
54°
3
75°
59°
4
83°
60°
5
79°
59°
6
74°
55°
7
75°
59°
8
74°
57°
9
77°
58°
10
83°
59°
11
82°
58°
12
75°
57°
13
77°
58°
14
83°
60°
15
83°
60°
16
82°
59°
17
84°
61°
18
85°
60°
19
81°
59°
20
80°
59°
21
83°
60°
22
83°
59°
23
82°
58°
24
82°
55°
25
80°
53°
26
75°
53°
27
77°
52°
28
80°
56°
29
82°
52°
30
83°
44°
31
75°
41°
1
66°
42°
2
67°
43°
3
68°
44°
4
77°
52°
5
79°
55°
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 85°, with overnight lows between 41° and 61°. The average high for August is 79° with an average low of 56°. 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.
