S
M
T
W
T
F
S
26
89°
59°
27
88°
54°
28
90°
56°
29
90°
54°
30
88°
55°
31
91°
56°
1
87°
55°
2
90°
57°
3
90°
57°
4
91°
56°
5
92°
56°
6
91°
55°
7
87°
55°
8
90°
54°
9
87°
55°
10
89°
56°
11
90°
52°
12
83°
54°
13
84°
53°
14
85°
50°
15
84°
49°
16
79°
53°
17
81°
53°
18
81°
52°
19
87°
51°
20
85°
49°
21
80°
47°
22
77°
47°
23
77°
48°
24
79°
48°
25
78°
49°
26
78°
44°
27
76°
42°
28
75°
46°
29
77°
49°
30
78°
50°
31
79°
45°
1
78°
46°
2
77°
50°
3
80°
45°
4
77°
39°
5
73°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arthur
Arthur's August 2026 forecast shows daily high temperatures ranging from 73° to 92°, with overnight lows between 39° and 59°. The average high for August is 84° with an average low of 51°. 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 Arthur. See also: September | October | November.