S
M
T
W
T
F
S
26
80°
59°
27
80°
59°
28
79°
58°
29
80°
59°
30
81°
59°
31
81°
60°
1
82°
67°
2
82°
59°
3
83°
60°
4
84°
59°
5
85°
65°
6
87°
67°
7
89°
67°
8
88°
66°
9
83°
60°
10
85°
59°
11
80°
58°
12
80°
57°
13
82°
60°
14
82°
66°
15
81°
59°
16
89°
68°
17
89°
59°
18
82°
62°
19
Hist. Avg.
79°
60°
20
Hist. Avg.
79°
59°
21
Hist. Avg.
79°
59°
22
Hist. Avg.
79°
59°
23
Hist. Avg.
79°
59°
24
Hist. Avg.
78°
59°
25
Hist. Avg.
78°
58°
26
Hist. Avg.
78°
58°
27
Hist. Avg.
78°
58°
28
Hist. Avg.
78°
58°
29
Hist. Avg.
78°
57°
30
Hist. Avg.
77°
57°
31
Hist. Avg.
77°
57°
1
Hist. Avg.
77°
56°
2
Hist. Avg.
76°
56°
3
Hist. Avg.
76°
56°
4
Hist. Avg.
76°
55°
5
Hist. Avg.
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Stillwater
Stillwater's August 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 57° and 68°. The average high for August is 83° with an average low of 61°. 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.
