S
M
T
W
T
F
S
26
62°
33°
27
66°
36°
28
61°
47°
29
48°
36°
30
46°
35°
1
46°
32°
2
45°
29°
3
56°
29°
4
72°
46°
5
62°
41°
6
45°
36°
7
47°
32°
8
55°
32°
9
64°
40°
10
54°
35°
11
48°
34°
12
57°
31°
13
54°
39°
14
47°
39°
15
65°
37°
16
72°
45°
17
77°
51°
18
86°
51°
19
85°
64°
20
64°
41°
21
53°
38°
22
64°
34°
23
56°
45°
24
59°
46°
25
76°
48°
26
82°
61°
27
69°
53°
28
60°
49°
29
72°
46°
30
58°
47°
31
67°
46°
1
61°
46°
2
64°
48°
3
69°
52°
4
77°
57°
5
76°
57°
6
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in The Blue Mountains
The Blue Mountains's May 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 46° and 57°. The average high for May is 68° with an average low of 51°. 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 The Blue Mountains. See also: June | July | August.