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
49°
39°
4
62°
49°
5
69°
52°
6
55°
38°
7
49°
31°
8
49°
32°
9
50°
34°
10
55°
35°
11
55°
36°
12
56°
38°
13
55°
40°
14
59°
42°
15
60°
41°
16
68°
47°
17
69°
48°
18
69°
47°
19
68°
46°
20
68°
48°
21
67°
45°
22
67°
42°
23
61°
39°
24
60°
41°
25
61°
41°
26
62°
42°
27
63°
41°
28
62°
42°
29
63°
41°
30
63°
42°
31
64°
51°
1
67°
47°
2
65°
43°
3
65°
50°
4
70°
50°
5
67°
47°
6
69°
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 49° to 70°, with overnight lows between 31° and 52°. 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.
