S
M
T
W
T
F
S
28
93°
55°
29
92°
52°
30
91°
53°
1
93°
52°
2
82°
56°
3
87°
58°
4
89°
58°
5
81°
55°
6
78°
48°
7
78°
48°
8
80°
52°
9
83°
54°
10
84°
55°
11
90°
58°
12
93°
59°
13
94°
60°
14
93°
61°
15
94°
60°
16
93°
60°
17
94°
59°
18
94°
60°
19
95°
61°
20
94°
61°
21
95°
60°
22
95°
61°
23
94°
61°
24
96°
60°
25
95°
59°
26
94°
60°
27
95°
58°
28
96°
58°
29
95°
60°
30
96°
58°
31
93°
53°
1
94°
49°
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 96°, with overnight lows between 48° and 61°. The average high for July is 91° with an average low of 57°. 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.