S
M
T
W
T
F
S
26
44°
32°
27
51°
36°
28
58°
26°
29
60°
22°
30
57°
30°
1
62°
28°
2
75°
36°
3
76°
43°
4
69°
36°
5
54°
35°
6
71°
37°
7
78°
46°
8
79°
44°
9
72°
44°
10
72°
45°
11
67°
43°
12
68°
42°
13
69°
43°
14
70°
44°
15
60°
38°
16
62°
44°
17
64°
43°
18
68°
45°
19
69°
46°
20
68°
46°
21
63°
43°
22
65°
42°
23
69°
43°
24
65°
41°
25
63°
41°
26
63°
40°
27
67°
40°
28
69°
46°
29
78°
51°
30
79°
50°
31
69°
52°
1
79°
52°
2
77°
51°
3
77°
52°
4
78°
53°
5
75°
54°
6
75°
53°
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 54° to 79°, with overnight lows between 28° and 54°. The average high for May is 70° with an average low of 44°. 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.
