S
M
T
W
T
F
S
29
46°
16°
30
66°
28°
31
49°
39°
1
48°
34°
2
44°
33°
3
54°
34°
4
60°
38°
5
45°
38°
6
40°
28°
7
36°
23°
8
47°
16°
9
63°
22°
10
71°
35°
11
47°
32°
12
53°
25°
13
63°
41°
14
64°
49°
15
59°
49°
16
74°
52°
17
67°
40°
18
63°
43°
19
48°
28°
20
39°
19°
21
50°
33°
22
48°
28°
23
50°
30°
24
52°
31°
25
54°
38°
26
54°
35°
27
52°
35°
28
53°
36°
29
53°
37°
30
56°
35°
1
52°
38°
2
53°
37°
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 39° to 67°, with overnight lows between 19° and 43°. The average high for April is 53° with an average low of 34°. 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.
