S
M
T
W
T
F
S
26
79°
43°
27
76°
40°
28
76°
41°
29
77°
37°
30
78°
53°
1
78°
47°
2
N/A
3
72°
53°
4
60°
42°
5
63°
39°
6
65°
42°
7
57°
35°
8
52°
36°
9
63°
36°
10
64°
41°
11
63°
42°
12
63°
42°
13
62°
41°
14
64°
42°
15
65°
41°
16
64°
42°
17
60°
37°
18
60°
37°
19
63°
38°
20
63°
39°
21
62°
38°
22
58°
35°
23
58°
39°
24
61°
41°
25
59°
41°
26
59°
40°
27
61°
40°
28
62°
39°
29
63°
40°
30
62°
35°
31
57°
34°
1
60°
37°
2
59°
36°
3
61°
38°
4
62°
38°
5
62°
39°
6
61°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Katoomba
Katoomba's May 2026 forecast shows daily high temperatures ranging from 52° to 72°, with overnight lows between 34° and 53°. The average high for May is 61° with an average low of 39°. 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 Katoomba. See also: June | July | August.