S
M
T
W
T
F
S
31
76°
47°
1
75°
55°
2
77°
53°
3
81°
47°
4
84°
52°
5
81°
65°
6
86°
67°
7
85°
66°
8
83°
66°
9
86°
71°
10
89°
70°
11
84°
64°
12
79°
63°
13
80°
61°
14
73°
54°
15
72°
48°
16
73°
57°
17
70°
57°
18
71°
54°
19
75°
52°
20
76°
56°
21
71°
53°
22
74°
58°
23
74°
55°
24
73°
50°
25
80°
61°
26
73°
56°
27
78°
62°
28
82°
66°
29
91°
75°
30
93°
73°
1
93°
73°
2
93°
73°
3
91°
69°
4
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Oswego
Oswego's June 2026 forecast shows daily high temperatures ranging from 89° to 93°, with overnight lows between 67° and 75°. The average high for June is 92° 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 June weather will actually feel in Oswego. See also: July | August | September.