S
M
T
W
T
F
S
28
89°
76°
29
90°
76°
30
90°
76°
1
90°
73°
2
93°
70°
3
92°
74°
4
92°
69°
5
90°
68°
6
90°
70°
7
90°
67°
8
94°
68°
9
94°
78°
10
90°
72°
11
90°
69°
12
88°
69°
13
88°
67°
14
87°
68°
15
86°
68°
16
88°
70°
17
93°
69°
18
94°
70°
19
90°
66°
20
94°
72°
21
92°
70°
22
92°
70°
23
91°
69°
24
94°
74°
25
94°
74°
26
95°
73°
27
95°
75°
28
94°
74°
29
94°
74°
30
93°
72°
31
93°
73°
1
92°
73°
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 86° to 95°, with overnight lows between 66° and 75°. The average high for July is 92° 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 Oswego. See also: August | September | October.