S
M
T
W
T
F
S
31
55°
36°
1
61°
37°
2
70°
42°
3
67°
46°
4
75°
50°
5
80°
50°
6
60°
51°
7
61°
48°
8
78°
43°
9
81°
49°
10
83°
54°
11
77°
56°
12
73°
55°
13
76°
54°
14
74°
53°
15
74°
59°
16
75°
55°
17
76°
50°
18
60°
50°
19
75°
57°
20
68°
51°
21
74°
54°
22
70°
56°
23
68°
53°
24
75°
54°
25
71°
53°
26
68°
54°
27
73°
56°
28
76°
55°
29
74°
55°
30
76°
57°
1
73°
56°
2
75°
57°
3
77°
56°
4
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Waltham
Waltham's June 2026 forecast shows daily high temperatures ranging from 68° to 77°, with overnight lows between 51° and 59°. The average high for June is 73° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Waltham. See also: July | August | September.
