S
M
T
W
T
F
S
26
69°
54°
27
69°
49°
28
75°
42°
29
82°
55°
30
74°
57°
1
66°
56°
2
60°
50°
3
69°
44°
4
80°
46°
5
80°
49°
6
87°
59°
7
76°
57°
8
73°
54°
9
79°
55°
10
87°
63°
11
81°
56°
12
69°
50°
13
82°
50°
14
81°
57°
15
77°
46°
16
84°
51°
17
91°
58°
18
91°
66°
19
89°
63°
20
90°
64°
21
90°
67°
22
84°
69°
23
85°
69°
24
83°
65°
25
83°
66°
26
84°
65°
27
83°
66°
28
84°
63°
29
83°
61°
30
82°
62°
31
81°
62°
1
85°
61°
2
86°
65°
3
85°
66°
4
82°
65°
5
81°
65°
6
82°
66°
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 81° to 90°, with overnight lows between 61° and 69°. The average high for May is 84° with an average low of 65°. 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.
