S
M
T
W
T
F
S
26
85°
53°
27
88°
63°
28
84°
68°
29
82°
67°
30
81°
67°
31
87°
63°
1
89°
63°
2
89°
74°
3
87°
68°
4
87°
61°
5
82°
67°
6
91°
71°
7
92°
70°
8
88°
69°
9
90°
68°
10
87°
65°
11
86°
69°
12
87°
69°
13
87°
69°
14
87°
66°
15
86°
67°
16
81°
71°
17
87°
66°
18
82°
65°
19
84°
67°
20
84°
67°
21
82°
64°
22
80°
63°
23
84°
64°
24
79°
63°
25
81°
62°
26
77°
63°
27
85°
68°
28
79°
60°
29
79°
61°
30
83°
66°
31
84°
66°
1
84°
65°
2
83°
66°
3
85°
67°
4
84°
66°
5
83°
65°
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 77° to 87°, with overnight lows between 60° and 71°. The average high for August is 83° with an average low of 65°. 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.
