S
M
T
W
T
F
S
28
83°
70°
29
90°
70°
30
91°
73°
1
97°
74°
2
100°
80°
3
101°
81°
4
102°
78°
5
94°
72°
6
81°
69°
7
81°
68°
8
84°
68°
9
86°
70°
10
87°
69°
11
88°
69°
12
87°
69°
13
90°
70°
14
88°
70°
15
89°
69°
16
83°
66°
17
87°
68°
18
86°
69°
19
90°
71°
20
90°
72°
21
85°
72°
22
84°
71°
23
85°
72°
24
85°
72°
25
86°
71°
26
87°
72°
27
89°
72°
28
88°
71°
29
88°
72°
30
90°
73°
31
90°
73°
1
89°
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 102°, with overnight lows between 66° and 81°. The average high for July is 88° with an average low of 71°. 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.