S
M
T
W
T
F
S
26
62°
48°
27
77°
50°
28
68°
54°
29
62°
47°
30
57°
44°
1
52°
31°
2
52°
30°
3
61°
47°
4
75°
49°
5
67°
43°
6
57°
35°
7
60°
36°
8
68°
46°
9
74°
52°
10
66°
38°
11
70°
38°
12
74°
39°
13
62°
43°
14
66°
39°
15
66°
42°
16
77°
59°
17
84°
62°
18
86°
66°
19
82°
62°
20
62°
48°
21
69°
48°
22
66°
51°
23
67°
60°
24
73°
51°
25
78°
54°
26
79°
64°
27
73°
58°
28
75°
51°
29
75°
56°
30
74°
50°
31
72°
49°
1
74°
51°
2
76°
52°
3
77°
56°
4
79°
55°
5
81°
60°
6
82°
61°
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 72° to 82°, with overnight lows between 49° and 64°. The average high for May is 76° with an average low of 55°. 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.
