S
M
T
W
T
F
S
29
62°
36°
30
81°
40°
31
67°
42°
1
42°
36°
2
70°
39°
3
61°
40°
4
51°
39°
5
52°
34°
6
52°
32°
7
44°
26°
8
71°
35°
9
70°
49°
10
55°
36°
11
58°
31°
12
79°
54°
13
79°
61°
14
81°
59°
15
74°
58°
16
72°
53°
17
82°
50°
18
61°
34°
19
51°
30°
20
57°
27°
21
76°
43°
22
85°
51°
23
81°
48°
24
71°
50°
25
66°
45°
26
66°
41°
27
70°
51°
28
63°
49°
29
60°
36°
30
56°
39°
1
52°
35°
2
58°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Oswego
Oswego's April 2026 forecast shows daily high temperatures ranging from 52° to 60°, with overnight lows between 35° and 40°. The average high for April is 57° with an average low of 38°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Oswego. See also: May | June | July.
