S
M
T
W
T
F
S
26
101°
79°
27
101°
80°
28
88°
78°
29
99°
75°
30
92°
77°
31
97°
73°
1
79°
67°
2
88°
64°
3
91°
66°
4
96°
71°
5
95°
77°
6
98°
77°
7
89°
74°
8
96°
69°
9
100°
76°
10
99°
78°
11
100°
80°
12
101°
81°
13
103°
82°
14
103°
82°
15
91°
68°
16
101°
72°
17
86°
67°
18
102°
64°
19
98°
78°
20
95°
69°
21
100°
69°
22
91°
68°
23
90°
64°
24
93°
66°
25
96°
71°
26
96°
72°
27
92°
68°
28
93°
62°
29
99°
70°
30
100°
74°
31
102°
76°
1
102°
78°
2
101°
76°
3
100°
77°
4
100°
76°
5
101°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Joplin
Joplin's August 2026 forecast shows daily high temperatures ranging from 100° to 102°, with overnight lows between 75° and 78°. The average high for August is 101° with an average low of 76°. 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 Joplin. See also: September | October | November.