S
M
T
W
T
F
S
28
89°
76°
29
90°
76°
30
90°
76°
1
90°
73°
2
92°
74°
3
91°
73°
4
94°
70°
5
91°
71°
6
89°
70°
7
89°
70°
8
88°
71°
9
89°
69°
10
86°
70°
11
87°
70°
12
91°
69°
13
89°
70°
14
93°
71°
15
92°
70°
16
85°
67°
17
93°
73°
18
94°
74°
19
95°
75°
20
96°
75°
21
96°
74°
22
95°
75°
23
96°
75°
24
97°
76°
25
97°
76°
26
96°
75°
27
97°
76°
28
96°
75°
29
96°
75°
30
95°
73°
31
95°
73°
1
94°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Oswego
Oswego's July 2026 forecast shows daily high temperatures ranging from 85° to 97°, with overnight lows between 67° and 76°. The average high for July is 93° with an average low of 72°. 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 Oswego. See also: August | September | October.