S
M
T
W
T
F
S
26
69°
43°
27
70°
42°
28
71°
44°
29
72°
44°
30
72°
43°
1
71°
45°
2
73°
45°
3
74°
46°
4
74°
46°
5
73°
47°
6
75°
46°
7
65°
45°
8
63°
38°
9
64°
42°
10
71°
47°
11
74°
47°
12
72°
46°
13
75°
50°
14
78°
51°
15
77°
50°
16
76°
50°
17
76°
51°
18
77°
43°
19
68°
41°
20
69°
41°
21
68°
42°
22
67°
44°
23
68°
46°
24
73°
50°
25
78°
49°
26
79°
53°
27
79°
54°
28
80°
48°
29
73°
46°
30
71°
47°
31
81°
50°
1
81°
52°
2
82°
51°
3
80°
46°
4
77°
44°
5
72°
47°
6
72°
49°
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 63° to 82°, with overnight lows between 38° and 54°. The average high for May is 73° with an average low of 46°. 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.
