S
M
T
W
T
F
S
26
73°
59°
27
67°
56°
28
66°
57°
29
68°
58°
30
70°
58°
31
69°
57°
1
71°
58°
2
69°
58°
3
67°
57°
4
69°
57°
5
70°
58°
6
71°
58°
7
72°
57°
8
69°
58°
9
68°
56°
10
67°
56°
11
71°
59°
12
72°
59°
13
72°
58°
14
71°
59°
15
72°
59°
16
72°
58°
17
71°
58°
18
70°
57°
19
71°
57°
20
71°
58°
21
70°
58°
22
69°
56°
23
70°
56°
24
67°
56°
25
66°
52°
26
66°
53°
27
65°
53°
28
65°
54°
29
66°
56°
30
65°
56°
31
65°
51°
1
66°
51°
2
64°
55°
3
64°
50°
4
69°
49°
5
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Raithby By Spilsby
Raithby By Spilsby's August 2026 forecast shows daily high temperatures ranging from 64° to 73°, with overnight lows between 49° and 59°. The average high for August is 69° with an average low of 56°. 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 Raithby By Spilsby. See also: September | October | November.