S
M
T
W
T
F
S
29
67°
28°
30
76°
44°
31
81°
56°
1
85°
59°
2
84°
61°
3
80°
58°
4
84°
57°
5
82°
60°
6
65°
47°
7
66°
44°
8
61°
39°
9
69°
34°
10
77°
46°
11
84°
53°
12
82°
56°
13
85°
58°
14
91°
59°
15
93°
62°
16
90°
61°
17
91°
63°
18
88°
57°
19
78°
53°
20
77°
55°
21
78°
57°
22
79°
59°
23
83°
50°
24
78°
56°
25
82°
56°
26
81°
55°
27
79°
53°
28
72°
50°
29
73°
51°
30
73°
49°
1
77°
57°
2
82°
58°
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 72° to 93°, with overnight lows between 46° and 63°. The average high for April is 81° with an average low of 55°. 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.