S
M
T
W
T
F
S
29
57°
25°
30
70°
39°
31
71°
56°
1
62°
37°
2
58°
36°
3
78°
45°
4
76°
41°
5
66°
35°
6
46°
35°
7
38°
23°
8
58°
19°
9
75°
42°
10
75°
43°
11
52°
33°
12
70°
30°
13
77°
56°
14
81°
56°
15
78°
60°
16
76°
55°
17
64°
50°
18
76°
38°
19
44°
25°
20
40°
26°
21
51°
36°
22
52°
34°
23
50°
35°
24
53°
34°
25
57°
39°
26
54°
42°
27
54°
38°
28
53°
37°
29
55°
39°
30
54°
38°
1
54°
37°
2
55°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Letchworth State Park
Letchworth State Park's April 2026 forecast shows daily high temperatures ranging from 40° to 78°, with overnight lows between 25° and 60°. The average high for April is 57° with an average low of 39°. 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 Letchworth State Park. See also: May | June | July.