S
M
T
W
T
F
S
29
49°
19°
30
67°
30°
31
60°
39°
1
64°
38°
2
38°
32°
3
56°
32°
4
56°
34°
5
48°
34°
6
44°
26°
7
39°
25°
8
47°
23°
9
58°
26°
10
70°
34°
11
53°
30°
12
54°
40°
13
66°
54°
14
77°
58°
15
79°
53°
16
77°
56°
17
73°
46°
18
72°
51°
19
64°
45°
20
57°
36°
21
58°
41°
22
65°
47°
23
68°
45°
24
62°
42°
25
53°
35°
26
55°
38°
27
54°
37°
28
55°
37°
29
58°
35°
30
59°
34°
1
57°
34°
2
56°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Monadnock State Park
Monadnock State Park's April 2026 forecast shows daily high temperatures ranging from 53° to 79°, with overnight lows between 30° and 58°. The average high for April is 62° with an average low of 42°. 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 Monadnock State Park. See also: May | June | July.