S
M
T
W
T
F
S
26
60°
38°
27
69°
38°
28
60°
47°
29
54°
48°
30
51°
39°
1
51°
35°
2
46°
36°
3
53°
35°
4
69°
44°
5
75°
50°
6
56°
39°
7
50°
34°
8
48°
38°
9
55°
41°
10
64°
46°
11
47°
34°
12
51°
37°
13
54°
43°
14
60°
42°
15
62°
44°
16
61°
40°
17
58°
42°
18
59°
44°
19
64°
43°
20
59°
38°
21
60°
38°
22
60°
40°
23
61°
40°
24
62°
41°
25
65°
46°
26
68°
47°
27
64°
45°
28
66°
43°
29
64°
41°
30
67°
48°
31
72°
51°
1
72°
50°
2
69°
46°
3
70°
49°
4
74°
52°
5
74°
53°
6
73°
52°
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 47° to 74°, with overnight lows between 34° and 53°. The average high for May is 62° with an average low of 43°. 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.
