S
M
T
W
T
F
S
29
52°
25°
30
72°
41°
31
54°
41°
1
70°
33°
2
37°
36°
3
63°
37°
4
55°
39°
5
50°
39°
6
50°
39°
7
43°
32°
8
48°
27°
9
61°
34°
10
71°
48°
11
60°
34°
12
57°
44°
13
73°
58°
14
78°
53°
15
69°
50°
16
74°
53°
17
76°
48°
18
67°
41°
19
55°
36°
20
57°
39°
21
59°
43°
22
63°
47°
23
68°
37°
24
58°
42°
25
60°
42°
26
57°
41°
27
56°
42°
28
58°
40°
29
57°
38°
30
59°
39°
1
59°
45°
2
68°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Groton
Groton's April 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 34° and 58°. The average high for April is 63° with an average low of 44°. 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 Groton. See also: May | June | July.
