S
M
T
W
T
F
S
31
77°
65°
1
82°
64°
2
82°
61°
3
80°
54°
4
82°
54°
5
83°
54°
6
85°
59°
7
73°
63°
8
81°
70°
9
88°
69°
10
89°
70°
11
90°
68°
12
91°
71°
13
88°
70°
14
82°
68°
15
81°
63°
16
77°
58°
17
81°
61°
18
83°
67°
19
84°
66°
20
83°
66°
21
87°
66°
22
88°
65°
23
87°
67°
24
88°
65°
25
85°
67°
26
89°
68°
27
88°
67°
28
85°
66°
29
85°
63°
30
86°
63°
1
87°
65°
2
89°
67°
3
87°
68°
4
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Harrisburg
Harrisburg's June 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 58° and 71°. 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 Harrisburg. See also: July | August | September.