S
M
T
W
T
F
S
28
88°
75°
29
88°
76°
30
90°
76°
1
90°
73°
2
90°
70°
3
90°
71°
4
91°
71°
5
88°
66°
6
89°
68°
7
89°
69°
8
92°
74°
9
94°
74°
10
91°
72°
11
89°
71°
12
90°
69°
13
89°
71°
14
93°
70°
15
93°
72°
16
95°
74°
17
96°
76°
18
94°
75°
19
90°
67°
20
94°
72°
21
95°
73°
22
94°
71°
23
92°
71°
24
92°
70°
25
91°
70°
26
92°
69°
27
93°
71°
28
93°
71°
29
92°
70°
30
93°
72°
31
92°
72°
1
93°
71°
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 89° to 96°, with overnight lows between 67° and 76°. The average high for July is 92° with an average low of 71°. 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.