S
M
T
W
T
F
S
26
46°
29°
27
34°
27°
28
51°
29°
29
55°
25°
30
56°
22°
1
64°
28°
2
74°
37°
3
71°
38°
4
52°
37°
5
47°
15°
6
55°
38°
7
60°
40°
8
67°
45°
9
60°
39°
10
70°
44°
11
81°
47°
12
74°
45°
13
75°
47°
14
76°
46°
15
80°
51°
16
69°
44°
17
72°
47°
18
72°
46°
19
79°
52°
20
58°
44°
21
59°
43°
22
60°
43°
23
62°
45°
24
62°
46°
25
64°
46°
26
67°
47°
27
73°
49°
28
74°
49°
29
73°
48°
30
71°
49°
31
73°
49°
1
74°
50°
2
76°
50°
3
76°
46°
4
65°
44°
5
65°
48°
6
69°
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 55° to 81°, with overnight lows between 38° and 52°. The average high for May is 69° with an average low of 46°. 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.
