S
M
T
W
T
F
S
26
89°
67°
27
98°
71°
28
92°
70°
29
72°
56°
30
61°
57°
1
60°
50°
2
81°
48°
3
82°
54°
4
86°
58°
5
94°
62°
6
68°
51°
7
68°
51°
8
82°
53°
9
94°
63°
10
94°
60°
11
81°
56°
12
89°
55°
13
95°
59°
14
93°
60°
15
87°
67°
16
91°
64°
17
89°
72°
18
92°
74°
19
97°
59°
20
80°
59°
21
73°
63°
22
91°
62°
23
89°
60°
24
93°
62°
25
90°
63°
26
89°
62°
27
87°
61°
28
93°
63°
29
94°
65°
30
91°
71°
31
96°
68°
1
97°
67°
2
97°
67°
3
93°
64°
4
92°
64°
5
91°
70°
6
91°
67°
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.