S
M
T
W
T
F
S
26
72°
54°
27
64°
48°
28
55°
45°
29
63°
39°
30
59°
37°
1
61°
34°
2
64°
32°
3
75°
48°
4
84°
48°
5
61°
48°
6
61°
41°
7
73°
41°
8
75°
50°
9
81°
45°
10
73°
43°
11
81°
48°
12
84°
59°
13
79°
45°
14
82°
57°
15
91°
59°
16
90°
64°
17
84°
63°
18
73°
55°
19
63°
46°
20
63°
51°
21
58°
54°
22
63°
51°
23
74°
54°
24
80°
56°
25
80°
57°
26
80°
60°
27
79°
62°
28
79°
61°
29
80°
61°
30
81°
60°
31
78°
59°
1
79°
57°
2
78°
60°
3
74°
56°
4
75°
58°
5
80°
62°
6
81°
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 58° to 81°, with overnight lows between 46° and 62°. The average high for May is 75° with an average low of 57°. 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.
