S
M
T
W
T
F
S
26
94°
60°
27
95°
58°
28
96°
58°
29
95°
60°
30
96°
58°
31
93°
53°
1
94°
49°
2
90°
53°
3
89°
57°
4
93°
61°
5
96°
60°
6
96°
60°
7
97°
59°
8
96°
55°
9
96°
57°
10
95°
51°
11
97°
46°
12
86°
48°
13
85°
49°
14
85°
51°
15
86°
50°
16
87°
51°
17
91°
58°
18
97°
56°
19
95°
56°
20
95°
55°
21
94°
47°
22
89°
47°
23
83°
46°
24
82°
49°
25
86°
47°
26
83°
44°
27
80°
43°
28
80°
44°
29
81°
45°
30
80°
45°
31
81°
46°
1
82°
50°
2
83°
54°
3
87°
55°
4
90°
52°
5
91°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lowell
Lowell's August 2026 forecast shows daily high temperatures ranging from 80° to 97°, with overnight lows between 43° and 61°. The average high for August is 90° with an average low of 52°. 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 Lowell. See also: September | October | November.