S
M
T
W
T
F
S
26
46°
29°
27
34°
27°
28
51°
31°
29
54°
29°
30
53°
31°
1
61°
36°
2
67°
40°
3
64°
41°
4
64°
42°
5
64°
41°
6
66°
37°
7
56°
35°
8
61°
39°
9
61°
41°
10
62°
40°
11
54°
29°
12
55°
33°
13
56°
33°
14
58°
37°
15
68°
43°
16
70°
45°
17
71°
45°
18
63°
44°
19
71°
47°
20
71°
47°
21
72°
46°
22
72°
47°
23
62°
43°
24
66°
44°
25
72°
48°
26
74°
49°
27
75°
49°
28
76°
50°
29
70°
49°
30
74°
50°
31
76°
51°
1
75°
51°
2
75°
50°
3
66°
50°
4
73°
51°
5
71°
50°
6
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gillette
Gillette's May 2026 forecast shows daily high temperatures ranging from 51° to 76°, with overnight lows between 29° and 51°. The average high for May is 66° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Gillette. See also: June | July | August.
