S
M
T
W
T
F
S
26
85°
64°
27
84°
64°
28
84°
63°
29
83°
63°
30
80°
62°
31
76°
62°
1
77°
61°
2
75°
62°
3
75°
61°
4
76°
62°
5
76°
60°
6
75°
61°
7
76°
61°
8
78°
60°
9
79°
62°
10
78°
62°
11
78°
61°
12
77°
61°
13
80°
60°
14
79°
61°
15
75°
60°
16
74°
60°
17
75°
58°
18
75°
59°
19
76°
60°
20
74°
59°
21
76°
53°
22
74°
51°
23
74°
50°
24
73°
55°
25
74°
56°
26
78°
51°
27
74°
50°
28
74°
55°
29
72°
56°
30
82°
49°
31
73°
49°
1
75°
57°
2
78°
56°
3
72°
48°
4
72°
53°
5
73°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Morrisburg
Morrisburg's August 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 48° and 64°. The average high for August is 77° with an average low of 58°. 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 Morrisburg. See also: September | October | November.