EDT   
UTC   

External Links


Style Options



Widescreen:
|

⚠Special Weather Statement ▶
5:32 a.m. EDT Monday 31 August 2026

Showers and embedded thunderstorms continue.

What:
Total rainfall amounts of 30 to 50 mm. Local amounts may exceed 50 mm.

When:
Continuing through this morning.

Additional information:
Local rainfall amounts may exceed 50 mm, especially for areas that receive thunderstorms.

Rainfall warnings may be required.

Water will likely pool on roads and in low-lying areas.

For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit https://www.ontario.ca/page/floods for the latest details.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on social media using #ONStorm.

In effect for:
  • London - Parkhill - Eastern Middlesex County
Observed at: London Int'l Airport
Date: 6:00 AM EDT Monday 31 August 2026
Light Rainshower
Light Rainshower 		Temp.: 19 °C
Wind: SSE 8 km/h
Humidity: 100 %
Dew point: 19 °C
Pressure: 101.7 kPa
Tendency: 0.09 kPa
Visibility: 10 km 		Sunrise: 6:48
Sunset: 20:02
Normals:
Max 24°C Min 13°C
 Extended Forecast - Environment Canada
Today
A few showers
A few showers
Max: 27°C
 Tue, 1 Sep
Chance of showers (60%)
Chance of showers
Max: 29°C
 Wed, 2 Sep
Chance of showers (40%)
Chance of showers
Max: 30°C
 Thu, 3 Sep
Chance of showers (30%)
Chance of showers
Max: 27°C
 Fri, 4 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 26°C
 Sat, 5 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 25°C
 Sun, 6 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 25°C
Tonight
Partly cloudy
Partly cloudy
Min: 21°C
 Night
Chance of showers (40%)
Chance of showers
Min: 18°C
 Night
Chance of showers (40%)
Chance of showers
Min: 18°C
 Night
Chance of showers (30%)
Chance of showers
Min: 17°C
 Night
Cloudy periods
Cloudy periods
Min: 15°C
 Night
Cloudy periods
Cloudy periods
Min: 15°C
  

Forecast

London, ON (Issued: 5:28 AM EDT Monday 31 August 2026)

Today
A few showers ending late this afternoon then a mix of sun and cloud. Risk of a thunderstorm. Local amount 10 to 15 mm. Wind becoming southwest 20 km/h near noon. High 27. Humidex 32. UV index 3 or moderate.
Tonight
Partly cloudy. Low 21.
Tue, 1 Sep
A mix of sun and cloud. 60 percent chance of showers in the afternoon with risk of a thunderstorm. Wind becoming west 20 km/h near noon. High 29. Humidex 37. UV index 8 or very high.
Night
Cloudy periods with 40 percent chance of showers. Low 18.
Wed, 2 Sep
A mix of sun and cloud with 40 percent chance of showers. High 30.
Night
Cloudy periods with 40 percent chance of showers. Low 18.
Thu, 3 Sep
Cloudy with 30 percent chance of showers. High 27.
Night
Cloudy periods with 30 percent chance of showers. Low 17.
Fri, 4 Sep
A mix of sun and cloud. High 26.
Night
Cloudy periods. Low 15.
Sat, 5 Sep
A mix of sun and cloud. High 25.
Night
Cloudy periods. Low 15.
Sun, 6 Sep
A mix of sun and cloud. High 25.

24 Hour Forecast - London, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
31 August 2026
8 AM 21 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SE 10
9 AM 22 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SE 15
10 AM 23 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SE 15
11 AM 24 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SE 15
12 PM 25 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SW 20
1 PM 26 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SW 20
2 PM 27 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SW 20
3 PM 27 A few showers. Risk of thunderstorms (80%)  A few showers. Risk of thunderstorms 80 SW 20
4 PM 26 A mix of sun and cloud (10%)  A mix of sun and cloud 10 SW 20
5 PM 26 A mix of sun and cloud (10%)  A mix of sun and cloud 10 SW 20
6 PM 25 Mainly cloudy (10%)  Mainly cloudy 10 SW 15
7 PM 25 Mainly cloudy (10%)  Mainly cloudy 10 SW 15
8 PM 24 Mainly cloudy (10%)  Mainly cloudy 10 SW 15
9 PM 23 Partly cloudy (10%)  Partly cloudy 10 SW 15
10 PM 23 A few clouds (10%)  A few clouds 10 SW 15
11 PM 22 A few clouds (10%)  A few clouds 10 SW 15
1 September 2026
12 AM 22 Partly cloudy (10%)  Partly cloudy 10 SW 10
1 AM 21 Partly cloudy (10%)  Partly cloudy 10 SW 10
2 AM 21 Partly cloudy (10%)  Partly cloudy 10 SW 10
3 AM 21 Mainly cloudy (10%)  Mainly cloudy 10 SW 10
4 AM 21 Mainly cloudy (10%)  Mainly cloudy 10 SW 10
5 AM 21 Partly cloudy (10%)  Partly cloudy 10 SW 10
6 AM 21 Partly cloudy (10%)  Partly cloudy 10 SW 10
7 AM 22 A mix of sun and cloud (10%)  A mix of sun and cloud 10 SW 10
 
† 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