S
M
T
W
T
F
S
28
94°
69°
29
92°
70°
30
91°
68°
1
92°
63°
2
89°
64°
3
89°
66°
4
93°
67°
5
93°
67°
6
92°
66°
7
87°
63°
8
88°
64°
9
91°
64°
10
92°
66°
11
92°
64°
12
90°
63°
13
89°
65°
14
90°
62°
15
86°
61°
16
86°
61°
17
88°
62°
18
88°
63°
19
86°
63°
20
86°
62°
21
87°
64°
22
85°
64°
23
85°
65°
24
87°
66°
25
85°
64°
26
84°
64°
27
91°
64°
28
90°
65°
29
90°
64°
30
87°
67°
31
90°
63°
1
90°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lowell
Lowell's July 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 61° and 70°. The average high for July is 89° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Lowell. See also: August | September | October.