S
M
T
W
T
F
S
29
86°
51°
30
79°
54°
31
70°
55°
1
60°
54°
2
65°
42°
3
77°
43°
4
83°
43°
5
84°
47°
6
85°
49°
7
77°
51°
8
82°
52°
9
80°
58°
10
67°
52°
11
62°
48°
12
61°
47°
13
65°
48°
14
71°
46°
15
72°
50°
16
67°
45°
17
74°
40°
18
77°
45°
19
79°
50°
20
65°
51°
21
60°
50°
22
64°
49°
23
77°
49°
24
76°
48°
25
70°
50°
26
68°
51°
27
71°
50°
28
75°
49°
29
75°
51°
30
79°
50°
1
80°
51°
2
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Princeton
Princeton's April 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 48° and 51°. The average high for April is 75° with an average low of 50°. 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 Princeton. See also: May | June | July.