S
M
T
W
T
F
S
26
75°
57°
27
73°
55°
28
71°
57°
29
72°
56°
30
69°
57°
31
73°
57°
1
69°
55°
2
70°
53°
3
72°
57°
4
75°
53°
5
74°
56°
6
74°
54°
7
73°
58°
8
72°
57°
9
73°
58°
10
74°
57°
11
71°
56°
12
69°
54°
13
73°
55°
14
74°
55°
15
74°
57°
16
71°
54°
17
70°
55°
18
68°
54°
19
Hist. Avg.
69°
55°
20
Hist. Avg.
69°
54°
21
Hist. Avg.
69°
54°
22
Hist. Avg.
69°
54°
23
Hist. Avg.
69°
54°
24
Hist. Avg.
68°
54°
25
Hist. Avg.
68°
54°
26
Hist. Avg.
68°
54°
27
Hist. Avg.
68°
54°
28
Hist. Avg.
68°
53°
29
Hist. Avg.
67°
53°
30
Hist. Avg.
67°
53°
31
Hist. Avg.
67°
53°
1
Hist. Avg.
67°
53°
2
Hist. Avg.
67°
53°
3
Hist. Avg.
66°
53°
4
Hist. Avg.
66°
52°
5
Hist. Avg.
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Horsham
Horsham's August 2026 forecast shows daily high temperatures ranging from 68° to 75°, with overnight lows between 53° and 58°. The average high for August is 72° 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.
