S
M
T
W
T
F
S
26
46°
25°
27
53°
30°
28
59°
29°
29
58°
33°
30
61°
36°
1
62°
37°
2
63°
36°
3
64°
25°
4
60°
25°
5
50°
31°
6
63°
37°
7
65°
39°
8
65°
39°
9
66°
40°
10
67°
41°
11
68°
41°
12
64°
35°
13
68°
42°
14
68°
38°
15
58°
37°
16
61°
36°
17
61°
45°
18
70°
45°
19
71°
40°
20
74°
33°
21
60°
37°
22
60°
35°
23
61°
45°
24
69°
43°
25
74°
37°
26
62°
41°
27
64°
46°
28
72°
49°
29
76°
48°
30
76°
48°
31
75°
50°
1
76°
50°
2
77°
46°
3
75°
51°
4
76°
52°
5
79°
42°
6
75°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ulan Bator
Ulan Bator's May 2026 forecast shows daily high temperatures ranging from 46° to 79°, with overnight lows between 25° and 52°. The average high for May is 66° 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 Ulan Bator. See also: June | July | August.
