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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Grand Valley, ON
Content continues below
August
Average Temperature
High
24°
Feels 24
Low
13°
Feels 12
Average Precipitation
11 Days
Rain amount
115.2mm
Snow amount
0cm
Content continues below
Daily Historical Averages
August 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
23°
13
25°
14
25°
15
24°
16
25°
17
24°
18
24°
19
25°
20
22°
21
23°
22
22°
23
22°
24
21°
25
22°
26
21°
27
28
29
30
31
Forecast
Wednesday, August 12, 2026
Day
23°
Feels 28
Wind
17 km/h W
Gust
27 km/h
Humidity
65%
P.O.P
60%
Rain
1-3 mm
Night
14°
Feels 13
Wind
14 km/h N
Gust
23 km/h
Humidity
100%
P.O.P
40%
Rain
<1 mm
Historical Averages
Aug 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.