S
M
T
W
T
F
S
26
104°
77°
27
104°
76°
28
100°
74°
29
104°
81°
30
103°
79°
31
106°
79°
1
93°
67°
2
93°
63°
3
98°
62°
4
104°
73°
5
103°
76°
6
101°
78°
7
89°
71°
8
105°
70°
9
103°
74°
10
102°
78°
11
104°
78°
12
104°
80°
13
107°
83°
14
105°
81°
15
104°
77°
16
101°
78°
17
90°
70°
18
108°
71°
19
101°
77°
20
102°
73°
21
101°
74°
22
96°
72°
23
94°
73°
24
101°
74°
25
97°
72°
26
91°
70°
27
96°
67°
28
96°
71°
29
103°
77°
30
102°
78°
31
105°
76°
1
102°
71°
2
97°
70°
3
92°
71°
4
95°
71°
5
94°
70°
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 91° to 105°, with overnight lows between 67° and 78°. The average high for August is 97° with an average low of 72°. 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.
