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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Gravenhurst, ON
Exceptional El Niño dominates this fall
Content continues below
September
Average Temperature
High
20°
Feels 21
Low
9°
Feels 8
Average Precipitation
9 Days
Rain amount
50.5mm
Snow amount
0cm
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
18°
20
19°
21
14°
22
16°
23
17°
24
15°
25
19°
26
20°
27
19°
28
19°
29
19°
30
19°
Forecast
Saturday, September 19, 2026
Day
18°
Feels 18
Wind
11 km/h SE
Gust
17 km/h
Humidity
45%
P.O.P
20%
Night
9°
Feels 7
Wind
10 km/h SE
Gust
15 km/h
Humidity
71%
P.O.P
30%
Historical Averages
Sep 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.