S
M
T
W
T
F
S
31
84°
65°
1
89°
66°
2
83°
67°
3
86°
63°
4
74°
67°
5
89°
65°
6
88°
68°
7
84°
71°
8
89°
69°
9
91°
72°
10
94°
75°
11
83°
62°
12
87°
55°
13
87°
60°
14
77°
53°
15
82°
51°
16
82°
70°
17
93°
60°
18
81°
56°
19
86°
66°
20
82°
66°
21
80°
57°
22
74°
58°
23
78°
60°
24
81°
62°
25
83°
65°
26
87°
65°
27
89°
66°
28
88°
65°
29
86°
64°
30
80°
59°
1
81°
69°
2
90°
66°
3
82°
64°
4
86°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Cortland
Cortland's June 2026 forecast shows daily high temperatures ranging from 74° to 93°, with overnight lows between 56° and 70°. The average high for June is 84° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Cortland. See also: July | August | September.