S
M
T
W
T
F
S
29
39°
21°
30
50°
34°
31
43°
35°
1
50°
33°
2
38°
29°
3
41°
32°
4
47°
35°
5
44°
35°
6
45°
31°
7
40°
28°
8
N/A
9
48°
34°
10
49°
39°
11
53°
29°
12
55°
37°
13
56°
49°
14
68°
46°
15
59°
42°
16
54°
43°
17
57°
34°
18
55°
38°
19
55°
39°
20
56°
41°
21
59°
40°
22
55°
36°
23
49°
38°
24
51°
37°
25
56°
38°
26
60°
40°
27
52°
38°
28
52°
35°
29
53°
33°
30
59°
36°
1
56°
41°
2
61°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Waltham
Waltham's April 2026 forecast shows daily high temperatures ranging from 48° to 68°, with overnight lows between 29° and 49°. The average high for April is 55° with an average low of 38°. 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 Waltham. See also: May | June | July.
