S
M
T
W
T
F
S
26
82°
58°
27
86°
59°
28
72°
65°
29
75°
62°
30
80°
57°
31
88°
55°
1
82°
67°
2
67°
59°
3
74°
58°
4
80°
52°
5
85°
58°
6
79°
63°
7
81°
62°
8
84°
63°
9
81°
59°
10
81°
65°
11
79°
60°
12
76°
59°
13
79°
58°
14
81°
58°
15
79°
59°
16
80°
58°
17
73°
59°
18
80°
54°
19
72°
57°
20
73°
51°
21
77°
52°
22
72°
58°
23
64°
54°
24
65°
54°
25
71°
58°
26
78°
54°
27
70°
60°
28
71°
51°
29
77°
60°
30
76°
61°
31
76°
65°
1
80°
63°
2
81°
57°
3
79°
56°
4
73°
55°
5
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in New Tecumseth
New Tecumseth's August 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 51° and 65°. The average high for August is 76° with an average low of 58°. 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 New Tecumseth. See also: September | October | November.