S
M
T
W
T
F
S
28
87°
68°
29
92°
71°
30
93°
70°
1
95°
69°
2
99°
70°
3
96°
66°
4
93°
68°
5
90°
69°
6
88°
67°
7
87°
67°
8
87°
68°
9
86°
70°
10
88°
69°
11
84°
68°
12
86°
67°
13
86°
66°
14
87°
68°
15
86°
68°
16
88°
67°
17
82°
63°
18
83°
64°
19
86°
70°
20
87°
69°
21
84°
69°
22
83°
68°
23
87°
70°
24
89°
70°
25
89°
69°
26
88°
70°
27
89°
70°
28
88°
69°
29
89°
71°
30
90°
70°
31
89°
70°
1
83°
69°
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 82° to 96°, with overnight lows between 63° and 71°. The average high for July is 87° with an average low of 68°. 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.