S
M
T
W
T
F
S
26
76°
43°
27
85°
44°
28
84°
60°
29
72°
66°
30
73°
63°
31
83°
57°
1
89°
61°
2
86°
68°
3
79°
63°
4
86°
57°
5
87°
56°
6
90°
72°
7
93°
71°
8
91°
70°
9
92°
63°
10
90°
66°
11
83°
62°
12
80°
60°
13
81°
61°
14
82°
60°
15
77°
59°
16
76°
58°
17
77°
60°
18
77°
57°
19
76°
59°
20
76°
60°
21
77°
58°
22
76°
61°
23
80°
63°
24
82°
63°
25
81°
62°
26
75°
61°
27
75°
61°
28
74°
62°
29
77°
62°
30
80°
61°
31
78°
60°
1
80°
57°
2
72°
54°
3
72°
56°
4
73°
55°
5
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Needham
Needham's August 2026 forecast shows daily high temperatures ranging from 72° to 93°, with overnight lows between 53° and 72°. The average high for August is 80° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Needham. See also: September | October | November.