S
M
T
W
T
F
S
29
54°
37°
30
54°
41°
31
64°
46°
1
55°
46°
2
54°
43°
3
63°
45°
4
61°
41°
5
52°
41°
6
59°
36°
7
63°
37°
8
70°
41°
9
N/A
10
52°
42°
11
51°
37°
12
50°
34°
13
50°
37°
14
47°
41°
15
56°
44°
16
58°
47°
17
60°
46°
18
58°
46°
19
57°
47°
20
58°
46°
21
57°
45°
22
49°
46°
23
50°
43°
24
49°
42°
25
49°
44°
26
50°
42°
27
50°
44°
28
52°
45°
29
51°
48°
30
51°
49°
1
56°
49°
2
55°
48°
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 47° to 60°, with overnight lows between 34° and 49°. The average high for April is 53° 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 Waltham. See also: May | June | July.
