S
M
T
W
T
F
S
28
83°
69°
29
89°
67°
30
91°
72°
1
91°
71°
2
93°
71°
3
94°
72°
4
93°
72°
5
85°
70°
6
87°
70°
7
86°
70°
8
89°
68°
9
85°
71°
10
80°
71°
11
76°
69°
12
86°
69°
13
88°
67°
14
89°
65°
15
95°
72°
16
94°
67°
17
89°
72°
18
84°
70°
19
84°
63°
20
82°
69°
21
81°
59°
22
77°
56°
23
78°
57°
24
80°
60°
25
81°
60°
26
80°
61°
27
82°
63°
28
80°
62°
29
79°
59°
30
78°
65°
31
86°
65°
1
79°
63°
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 77° to 95°, with overnight lows between 56° and 72°. 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.