S
M
T
W
T
F
S
28
83°
64°
29
91°
75°
30
93°
75°
1
93°
75°
2
94°
74°
3
92°
68°
4
89°
67°
5
75°
67°
6
77°
68°
7
85°
61°
8
87°
66°
9
84°
68°
10
78°
65°
11
82°
65°
12
84°
64°
13
88°
65°
14
90°
67°
15
86°
65°
16
84°
62°
17
83°
64°
18
80°
62°
19
84°
64°
20
83°
63°
21
78°
59°
22
79°
60°
23
80°
63°
24
80°
63°
25
82°
64°
26
83°
65°
27
82°
66°
28
86°
67°
29
86°
67°
30
85°
66°
31
84°
67°
1
85°
66°
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 78° to 90°, with overnight lows between 59° and 68°. The average high for July is 83° 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.