S
M
T
W
T
F
S
26
74°
56°
27
75°
58°
28
75°
57°
29
78°
56°
30
73°
54°
31
74°
58°
1
73°
56°
2
73°
55°
3
74°
55°
4
74°
59°
5
72°
58°
6
72°
59°
7
73°
59°
8
73°
57°
9
74°
56°
10
74°
59°
11
77°
59°
12
74°
58°
13
73°
56°
14
75°
59°
15
77°
53°
16
71°
51°
17
71°
51°
18
70°
50°
19
70°
51°
20
71°
52°
21
71°
50°
22
70°
52°
23
70°
52°
24
71°
55°
25
70°
55°
26
71°
56°
27
70°
56°
28
68°
56°
29
70°
55°
30
78°
52°
31
77°
54°
1
77°
53°
2
76°
55°
3
76°
55°
4
77°
54°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Thetford
Thetford's August 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 50° and 59°. The average high for August is 73° with an average low of 55°. 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.