S
M
T
W
T
F
S
31
74°
49°
1
75°
51°
2
74°
54°
3
78°
52°
4
85°
60°
5
87°
66°
6
82°
66°
7
84°
62°
8
84°
66°
9
87°
64°
10
84°
65°
11
85°
67°
12
87°
69°
13
87°
67°
14
86°
64°
15
82°
65°
16
83°
64°
17
80°
60°
18
75°
64°
19
78°
63°
20
79°
64°
21
83°
57°
22
74°
56°
23
75°
58°
24
82°
66°
25
83°
66°
26
83°
63°
27
77°
59°
28
77°
63°
29
78°
65°
30
77°
62°
1
78°
60°
2
77°
59°
3
79°
60°
4
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Upper St. Clair
Upper St. Clair's June 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 56° and 69°. The average high for June is 81° with an average low of 63°. 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 Upper St. Clair. See also: July | August | September.