S
M
T
W
T
F
S
26
87°
67°
27
87°
67°
28
86°
66°
29
86°
66°
30
85°
64°
31
79°
61°
1
78°
59°
2
78°
59°
3
79°
62°
4
80°
61°
5
80°
61°
6
81°
64°
7
80°
65°
8
79°
64°
9
79°
63°
10
83°
57°
11
80°
58°
12
85°
62°
13
84°
63°
14
86°
64°
15
85°
63°
16
85°
64°
17
86°
64°
18
86°
63°
19
84°
57°
20
81°
55°
21
78°
55°
22
78°
54°
23
79°
54°
24
78°
55°
25
81°
55°
26
84°
56°
27
84°
54°
28
83°
59°
29
80°
59°
30
79°
57°
31
83°
60°
1
83°
52°
2
82°
51°
3
75°
52°
4
77°
55°
5
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Leominster
Leominster's August 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 51° and 67°. The average high for August is 82° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Leominster. See also: September | October | November.