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°
43°
21
52°
44°
22
63°
41°
23
73°
40°
24
85°
44°
25
91°
48°
26
96°
60°
27
94°
61°
28
93°
68°
29
89°
63°
30
72°
61°
31
75°
52°
1
73°
48°
2
75°
51°
3
74°
52°
4
77°
49°
5
84°
51°
6
95°
62°
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 ° to °, with overnight lows between ° and °. The average high for May 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 May weather will actually feel in Sidney. See also: June | July | August.