S
M
T
W
T
F
S
26
79°
61°
27
75°
61°
28
79°
59°
29
77°
55°
30
75°
59°
1
77°
57°
2
79°
64°
3
84°
63°
4
84°
68°
5
84°
68°
6
88°
70°
7
86°
72°
8
84°
70°
9
81°
63°
10
81°
55°
11
84°
63°
12
86°
66°
13
86°
68°
14
86°
68°
15
86°
67°
16
79°
66°
17
72°
59°
18
77°
57°
19
N/A
20
76°
59°
21
81°
63°
22
82°
60°
23
85°
63°
24
88°
70°
25
92°
65°
26
98°
72°
27
97°
75°
28
99°
77°
29
89°
66°
30
90°
68°
31
89°
67°
1
87°
67°
2
86°
64°
3
88°
64°
4
89°
65°
5
87°
65°
6
89°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Tehran
Tehran's May 2026 forecast shows daily high temperatures ranging from 76° to 99°, with overnight lows between 59° and 77°. The average high for May is 88° with an average low of 66°. 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 Tehran. See also: June | July | August.
