S
M
T
W
T
F
S
26
93°
73°
27
92°
72°
28
92°
73°
29
93°
74°
30
94°
73°
31
94°
73°
1
89°
72°
2
92°
72°
3
92°
71°
4
91°
72°
5
93°
73°
6
93°
72°
7
92°
68°
8
89°
71°
9
89°
71°
10
92°
70°
11
90°
70°
12
88°
68°
13
91°
69°
14
92°
71°
15
91°
71°
16
90°
70°
17
87°
70°
18
91°
71°
19
92°
70°
20
91°
70°
21
91°
69°
22
88°
70°
23
86°
68°
24
91°
67°
25
91°
69°
26
90°
67°
27
90°
65°
28
86°
65°
29
87°
66°
30
86°
64°
31
85°
67°
1
87°
68°
2
86°
64°
3
84°
63°
4
83°
62°
5
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Blenheim
Blenheim's August 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 62° and 74°. The average high for August is 90° with an average low of 69°. 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 Blenheim. See also: September | October | November.
