S
M
T
W
T
F
S
26
95°
74°
27
95°
74°
28
94°
75°
29
96°
75°
30
96°
74°
31
95°
75°
1
95°
75°
2
96°
76°
3
96°
76°
4
97°
75°
5
97°
76°
6
98°
76°
7
97°
75°
8
97°
75°
9
96°
74°
10
95°
75°
11
96°
75°
12
96°
76°
13
97°
76°
14
96°
75°
15
97°
75°
16
96°
73°
17
95°
68°
18
95°
68°
19
93°
69°
20
94°
67°
21
92°
71°
22
91°
72°
23
89°
68°
24
89°
66°
25
90°
65°
26
88°
65°
27
88°
64°
28
89°
63°
29
88°
64°
30
89°
64°
31
93°
70°
1
93°
66°
2
92°
65°
3
93°
69°
4
93°
69°
5
92°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mill Creek
Mill Creek's August 2026 forecast shows daily high temperatures ranging from 88° to 98°, with overnight lows between 63° and 76°. 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 Mill Creek. See also: September | October | November.