S
M
T
W
T
F
S
26
77°
46°
27
63°
57°
28
62°
51°
29
62°
43°
30
62°
37°
1
56°
43°
2
57°
39°
3
66°
39°
4
75°
50°
5
55°
48°
6
59°
43°
7
63°
39°
8
64°
48°
9
75°
50°
10
68°
52°
11
70°
46°
12
84°
45°
13
70°
44°
14
70°
39°
15
74°
50°
16
75°
61°
17
85°
61°
18
77°
61°
19
80°
54°
20
64°
45°
21
70°
54°
22
65°
59°
23
73°
58°
24
78°
57°
25
77°
62°
26
79°
61°
27
80°
60°
28
79°
58°
29
78°
61°
30
78°
61°
31
79°
60°
1
83°
59°
2
81°
62°
3
75°
58°
4
74°
55°
5
75°
60°
6
79°
64°
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 64° to 83°, with overnight lows between 45° and 64°. The average high for May is 76° with an average low of 58°. 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.
