S
M
T
W
T
F
S
29
52°
26°
30
67°
36°
31
67°
52°
1
53°
35°
2
43°
34°
3
77°
40°
4
64°
38°
5
63°
34°
6
41°
31°
7
33°
19°
8
49°
15°
9
67°
38°
10
71°
39°
11
46°
28°
12
61°
28°
13
69°
52°
14
78°
46°
15
72°
45°
16
75°
45°
17
54°
48°
18
74°
37°
19
44°
33°
20
38°
32°
21
54°
40°
22
53°
35°
23
46°
40°
24
49°
38°
25
50°
43°
26
51°
40°
27
50°
42°
28
49°
43°
29
50°
44°
30
54°
43°
1
54°
41°
2
58°
43°
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 38° to 75°, with overnight lows between 32° and 48°. The average high for April is 53° with an average low of 40°. 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.
