S
M
T
W
T
F
S
26
97°
77°
27
98°
76°
28
98°
77°
29
97°
77°
30
98°
76°
31
98°
77°
1
97°
76°
2
97°
76°
3
98°
76°
4
99°
77°
5
98°
76°
6
96°
76°
7
93°
71°
8
95°
74°
9
97°
72°
10
95°
74°
11
91°
71°
12
96°
69°
13
95°
71°
14
92°
74°
15
93°
74°
16
96°
73°
17
96°
73°
18
96°
67°
19
92°
66°
20
90°
65°
21
90°
68°
22
94°
71°
23
96°
69°
24
95°
71°
25
94°
72°
26
95°
72°
27
95°
70°
28
94°
66°
29
90°
65°
30
86°
66°
31
87°
65°
1
88°
66°
2
88°
64°
3
85°
62°
4
85°
64°
5
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Muenster
Muenster's August 2026 forecast shows daily high temperatures ranging from 85° to 99°, with overnight lows between 62° and 77°. The average high for August is 94° with an average low of 71°. 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 Muenster. See also: September | October | November.