S
M
T
W
T
F
S
26
102°
64°
27
91°
69°
28
96°
71°
29
97°
67°
30
81°
54°
31
88°
53°
1
99°
64°
2
99°
67°
3
79°
41°
4
75°
40°
5
87°
52°
6
94°
50°
7
94°
50°
8
96°
59°
9
96°
52°
10
97°
53°
11
94°
56°
12
78°
55°
13
76°
51°
14
77°
55°
15
72°
54°
16
83°
52°
17
87°
56°
18
84°
52°
19
88°
52°
20
94°
47°
21
97°
62°
22
86°
57°
23
93°
62°
24
88°
58°
25
84°
51°
26
88°
47°
27
93°
56°
28
90°
62°
29
86°
59°
30
87°
46°
31
83°
45°
1
82°
52°
2
92°
50°
3
88°
61°
4
95°
61°
5
90°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gillette
Gillette's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Gillette. See also: September | October | November.