S
M
T
W
T
F
S
26
88°
70°
27
88°
70°
28
87°
69°
29
86°
69°
30
86°
64°
31
81°
62°
1
80°
62°
2
81°
63°
3
82°
67°
4
82°
64°
5
83°
63°
6
85°
68°
7
86°
68°
8
84°
67°
9
84°
68°
10
82°
63°
11
84°
61°
12
84°
62°
13
83°
67°
14
87°
68°
15
86°
66°
16
87°
69°
17
88°
68°
18
87°
64°
19
85°
60°
20
80°
59°
21
79°
59°
22
79°
60°
23
80°
59°
24
79°
59°
25
81°
60°
26
82°
58°
27
83°
59°
28
80°
60°
29
79°
59°
30
78°
58°
31
80°
62°
1
84°
58°
2
79°
57°
3
76°
56°
4
78°
57°
5
79°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Joy
Mount Joy's August 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 56° and 70°. The average high for August is 83° with an average low of 63°. 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 Mount Joy. See also: September | October | November.
