S
M
T
W
T
F
S
26
45°
15°
27
46°
28°
28
54°
23°
29
52°
27°
30
59°
25°
1
69°
23°
2
71°
38°
3
77°
32°
4
54°
37°
5
48°
29°
6
58°
19°
7
68°
24°
8
75°
40°
9
64°
36°
10
70°
42°
11
79°
49°
12
75°
48°
13
85°
42°
14
74°
55°
15
68°
41°
16
65°
36°
17
53°
42°
18
44°
38°
19
61°
31°
20
69°
44°
21
58°
43°
22
68°
41°
23
75°
48°
24
87°
51°
25
94°
58°
26
93°
59°
27
80°
56°
28
77°
53°
29
84°
54°
30
80°
55°
31
82°
56°
1
82°
56°
2
87°
50°
3
80°
54°
4
73°
52°
5
73°
54°
6
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sidney
Sidney's May 2026 forecast shows daily high temperatures ranging from 58° to 94°, with overnight lows between 41° and 59°. The average high for May is 79° with an average low of 52°. 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 Sidney. See also: June | July | August.
