S
M
T
W
T
F
S
26
75°
63°
27
76°
57°
28
82°
63°
29
92°
63°
30
79°
62°
31
74°
57°
1
76°
55°
2
77°
54°
3
85°
61°
4
84°
60°
5
79°
60°
6
70°
54°
7
75°
50°
8
83°
56°
9
85°
58°
10
73°
59°
11
76°
53°
12
86°
59°
13
92°
61°
14
N/A
15
76°
53°
16
76°
57°
17
79°
62°
18
79°
56°
19
74°
51°
20
72°
53°
21
72°
54°
22
71°
53°
23
71°
52°
24
70°
52°
25
69°
50°
26
68°
53°
27
68°
50°
28
68°
51°
29
69°
55°
30
69°
55°
31
70°
54°
1
71°
52°
2
69°
49°
3
68°
49°
4
70°
54°
5
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Thetford
Thetford's August 2026 forecast shows daily high temperatures ranging from 68° to 79°, with overnight lows between 49° and 62°. The average high for August is 71° with an average low of 53°. 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 Thetford. See also: September | October | November.