S
M
T
W
T
F
S
26
87°
66°
27
87°
66°
28
86°
65°
29
87°
66°
30
87°
66°
31
86°
65°
1
85°
67°
2
86°
66°
3
85°
66°
4
84°
65°
5
81°
61°
6
83°
63°
7
86°
65°
8
86°
58°
9
79°
58°
10
79°
59°
11
80°
62°
12
79°
60°
13
81°
64°
14
81°
65°
15
83°
64°
16
83°
64°
17
79°
56°
18
79°
55°
19
80°
60°
20
83°
61°
21
79°
61°
22
81°
57°
23
83°
58°
24
82°
55°
25
78°
55°
26
80°
56°
27
78°
55°
28
77°
54°
29
82°
57°
30
83°
61°
31
84°
61°
1
84°
60°
2
83°
60°
3
84°
53°
4
78°
51°
5
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stillwater
Stillwater's August 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 51° and 67°. The average high for August is 82° with an average low of 60°. 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 Stillwater. See also: September | October | November.
