S
M
T
W
T
F
S
26
83°
54°
27
83°
59°
28
81°
66°
29
78°
68°
30
78°
65°
31
85°
61°
1
87°
63°
2
84°
71°
3
80°
63°
4
86°
58°
5
86°
59°
6
90°
74°
7
92°
71°
8
89°
69°
9
90°
67°
10
86°
61°
11
85°
65°
12
84°
62°
13
85°
66°
14
84°
62°
15
81°
59°
16
81°
58°
17
75°
66°
18
86°
66°
19
85°
65°
20
83°
61°
21
76°
62°
22
70°
65°
23
81°
67°
24
81°
56°
25
79°
55°
26
79°
58°
27
81°
61°
28
83°
66°
29
79°
56°
30
81°
63°
31
82°
66°
1
80°
66°
2
80°
69°
3
85°
61°
4
81°
60°
5
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Southington
Southington's August 2026 forecast shows daily high temperatures ranging from 77° to 85°, with overnight lows between 56° and 69°. The average high for August is 81° with an average low of 62°. 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 Southington. See also: September | October | November.