S
M
T
W
T
F
S
28
78°
55°
29
84°
63°
30
84°
54°
1
79°
53°
2
79°
61°
3
80°
63°
4
77°
55°
5
77°
53°
6
78°
58°
7
77°
55°
8
77°
56°
9
78°
59°
10
80°
59°
11
84°
61°
12
81°
63°
13
79°
64°
14
81°
57°
15
77°
55°
16
77°
59°
17
80°
57°
18
79°
58°
19
83°
58°
20
78°
56°
21
78°
57°
22
81°
57°
23
81°
58°
24
82°
57°
25
84°
62°
26
85°
65°
27
83°
57°
28
80°
56°
29
77°
58°
30
78°
57°
31
77°
56°
1
78°
57°
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 85°, with overnight lows between 53° and 65°. The average high for July is 80° with an average low of 58°. 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.