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
69°
57°
21
73°
53°
22
70°
55°
23
69°
53°
24
77°
56°
25
73°
55°
26
68°
57°
27
75°
56°
28
76°
55°
29
77°
54°
30
77°
57°
1
76°
58°
2
79°
59°
3
78°
57°
4
77°
56°
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 79°, with overnight lows between 53° and 59°. The average high for June is 75° with an average low of 56°. 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.
