Observed at: London Int'l Airport
Date: 2:00 PM EDT Thursday 17 September 2026
Mist
Mist
Temp.: 22 °C
Wind: NNW 4 km/h
Humidity: 84 %
Dew point: 19 °C
Pressure: 102.3 kPa
Tendency: 0.09 kPa
Visibility: 10 km
Sunrise: 7:06
Sunset: 19:32
Normals:
Max 21°C Min 10°C
 Extended Forecast - Environment Canada
Today
Chance of showers (40%)
Chance of showers
Max: 23°C
Fri, 18 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 23°C
Sat, 19 Sep
Chance of showers (60%)
Chance of showers
Max: 19°C
Sun, 20 Sep
Chance of showers (70%)
Chance of showers
Max: 20°C
Mon, 21 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 17°C
Tue, 22 Sep
Chance of showers (30%)
Chance of showers
Max: 17°C
Wed, 23 Sep
Chance of showers (40%)
Chance of showers
Max: 19°C
Tonight
Mainly cloudy
Mainly cloudy
Min: 10°C
Night
Cloudy
Cloudy
Min: 13°C
Night
Showers
Showers
Min: 13°C
Night
Chance of showers (30%)
Chance of showers
Min: 9°C
Night
Chance of showers (30%)
Chance of showers
Min: 10°C
Night
Chance of showers (60%)
Chance of showers
Min: 11°C
 

Forecast

London, ON (Issued: 11:06 AM EDT Thursday 17 September 2026)

Today
Cloudy. 40 percent chance of showers near noon. High 23. Humidex 28. UV index 5 or moderate.
Tonight
Cloudy. Clearing after midnight. Low 10.
Fri, 18 Sep
A mix of sun and cloud. High 23. Humidex 26. UV index 7 or high.
Night
Cloudy. Low 13.
Sat, 19 Sep
Cloudy with 60 percent chance of showers. High 19.
Night
Showers. Low 13.
Sun, 20 Sep
Cloudy with 70 percent chance of showers. High 20.
Night
Cloudy periods with 30 percent chance of showers. Low 9.
Mon, 21 Sep
A mix of sun and cloud. High 17.
Night
Cloudy periods with 30 percent chance of showers. Low 10.
Tue, 22 Sep
A mix of sun and cloud with 30 percent chance of showers. High 17.
Night
Cloudy with 60 percent chance of showers. Low 11.
Wed, 23 Sep
Cloudy with 40 percent chance of showers. High 19.

24 Hour Forecast - London, ON

Date/Time Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
17 September 2026
3 PM 23 Cloudy (20%)  Cloudy 20 N 15
4 PM 22 Mainly cloudy (20%)  Mainly cloudy 20 N 15
5 PM 22 Mainly cloudy (20%)  Mainly cloudy 20 N 15
6 PM 21 Mainly cloudy (20%)  Mainly cloudy 20 N 15
7 PM 19 Cloudy (10%)  Cloudy 10 N 15
8 PM 18 Cloudy (10%)  Cloudy 10 N 15
9 PM 17 Cloudy (10%)  Cloudy 10 N 15
10 PM 16 Cloudy (10%)  Cloudy 10 N 15
11 PM 15 Cloudy (10%)  Cloudy 10 N 15
18 September 2026
12 AM 14 Mainly cloudy (10%)  Mainly cloudy 10 N 15
1 AM 13 Partly cloudy (10%)  Partly cloudy 10 N 15
2 AM 12 A few clouds (10%)  A few clouds 10 N 10
3 AM 11 A few clouds (10%)  A few clouds 10 N 10
4 AM 11 A few clouds (10%)  A few clouds 10 N 10
5 AM 10 A few clouds (10%)  A few clouds 10 N 10
6 AM 11 Partly cloudy (10%)  Partly cloudy 10 N 10
7 AM 11 A mix of sun and cloud (10%)  A mix of sun and cloud 10 N 10
8 AM 12 A mix of sun and cloud (10%)  A mix of sun and cloud 10 N 15
9 AM 14 A mix of sun and cloud (10%)  A mix of sun and cloud 10 N 15
10 AM 17 A mix of sun and cloud (10%)  A mix of sun and cloud 10 N 15
11 AM 19 A mix of sun and cloud (10%)  A mix of sun and cloud 10 N 15
12 PM 20 A mix of sun and cloud (10%)  A mix of sun and cloud 10 N 15
1 PM 21 Mainly cloudy (10%)  Mainly cloudy 10 N 15
2 PM 22 Mainly cloudy (10%)  Mainly cloudy 10 N 15
 
† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time.
  Nil: 0%
  Low: 40% or below
  Medium: 60% or 70%
  High: Above 70%

Environment Canada