S
M
T
W
T
F
S
26
100°
76°
27
99°
76°
28
98°
75°
29
99°
75°
30
100°
76°
31
99°
75°
1
97°
74°
2
97°
74°
3
98°
75°
4
98°
75°
5
99°
76°
6
99°
76°
7
98°
75°
8
99°
75°
9
98°
74°
10
91°
74°
11
97°
73°
12
97°
74°
13
96°
74°
14
96°
71°
15
97°
72°
16
96°
71°
17
97°
72°
18
97°
70°
19
96°
64°
20
89°
64°
21
87°
65°
22
88°
65°
23
90°
64°
24
95°
67°
25
95°
71°
26
96°
70°
27
96°
70°
28
95°
71°
29
96°
70°
30
95°
69°
31
94°
69°
1
94°
62°
2
93°
61°
3
87°
63°
4
92°
69°
5
93°
69°
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 87° to 100°, with overnight lows between 61° and 76°. The average high for August is 96° 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 Stillwater. See also: September | October | November.
