S
M
T
W
T
F
S
31
89°
69°
1
85°
68°
2
87°
63°
3
86°
61°
4
88°
63°
5
90°
68°
6
87°
68°
7
88°
67°
8
88°
68°
9
87°
67°
10
89°
66°
11
90°
67°
12
89°
66°
13
88°
68°
14
87°
63°
15
87°
67°
16
86°
66°
17
84°
67°
18
82°
67°
19
83°
66°
20
84°
67°
21
84°
68°
22
87°
67°
23
84°
66°
24
84°
64°
25
85°
65°
26
87°
68°
27
87°
67°
28
85°
68°
29
84°
68°
30
85°
65°
1
84°
64°
2
84°
68°
3
85°
69°
4
86°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Smithsonia
Smithsonia's June 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 61° and 69°. The average high for June is 86° 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 June weather will actually feel in Smithsonia. See also: July | August | September.