The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Trenton, ON
Exceptional El Niño dominates this fall
Content continues below
September
Average Temperature
High
22°
Feels 22
Low
11°
Feels 11
Average Precipitation
10 Days
Rain amount
62.1mm
Snow amount
0cm
Content continues below
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
21°
19
17°
20
17°
21
16°
22
17°
23
17°
24
15°
25
19°
26
20°
27
20°
28
19°
29
19°
30
20°
Forecast
Friday, September 18, 2026
Day
21°
Feels 22
Wind
17 km/h N
Gust
26 km/h
Humidity
45%
P.O.P
20%
Night
8°
Feels 4
Wind
17 km/h NE
Gust
26 km/h
Humidity
76%
P.O.P
30%
Historical Averages
Sep 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.