S
M
T
W
T
F
S
27
57°
42°
28
57°
42°
29
62°
41°
30
60°
39°
1
67°
40°
2
71°
44°
3
58°
42°
4
59°
41°
5
65°
42°
6
70°
43°
7
69°
48°
8
60°
39°
9
65°
42°
10
63°
47°
11
61°
48°
12
64°
45°
13
63°
49°
14
65°
51°
15
55°
42°
16
56°
47°
17
65°
49°
18
63°
47°
19
61°
47°
20
64°
48°
21
62°
47°
22
68°
42°
23
65°
44°
24
66°
43°
25
64°
48°
26
66°
51°
27
71°
51°
28
82°
51°
29
71°
49°
30
70°
46°
31
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sidney
Sidney's May 2025 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.