S
M
T
W
T
F
S
26
94°
66°
27
84°
63°
28
84°
64°
29
86°
64°
30
86°
65°
31
94°
65°
1
87°
63°
2
86°
62°
3
84°
59°
4
86°
65°
5
93°
64°
6
84°
58°
7
82°
58°
8
82°
55°
9
83°
61°
10
85°
63°
11
89°
64°
12
84°
60°
13
83°
57°
14
83°
61°
15
91°
64°
16
92°
63°
17
92°
64°
18
91°
64°
19
92°
63°
20
83°
62°
21
87°
62°
22
91°
61°
23
89°
61°
24
92°
60°
25
91°
54°
26
81°
50°
27
80°
53°
28
82°
55°
29
86°
58°
30
89°
48°
31
89°
46°
1
77°
43°
2
73°
45°
3
75°
45°
4
76°
50°
5
83°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Nashua
Nashua's August 2026 forecast shows daily high temperatures ranging from 73° to 94°, with overnight lows between 43° and 66°. The average high for August is 86° with an average low of 59°. 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 Nashua. See also: September | October | November.
