S
M
T
W
T
F
S
28
83°
70°
29
90°
70°
30
91°
73°
1
97°
74°
2
103°
80°
3
102°
82°
4
101°
76°
5
94°
73°
6
81°
70°
7
78°
69°
8
86°
70°
9
81°
72°
10
85°
70°
11
81°
66°
12
87°
67°
13
85°
65°
14
93°
72°
15
98°
76°
16
98°
72°
17
94°
72°
18
88°
71°
19
84°
69°
20
88°
71°
21
87°
68°
22
86°
70°
23
85°
70°
24
91°
70°
25
87°
67°
26
86°
69°
27
90°
73°
28
90°
73°
29
89°
72°
30
88°
72°
31
84°
70°
1
87°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Merion
Merion's July 2026 forecast shows daily high temperatures ranging from 81° to 98°, with overnight lows between 65° and 76°. The average high for July is 88° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Merion. See also: August | September | October.