Observed at: London Int'l Airport
Date: 9:00 AM EDT Monday 3 August 2026
Sunny
Sunny
Temp.: 18 °C
Wind: NNW 20 km/h
Humidity: 82 %
Dew point: 15 °C
Pressure: 101.3 kPa
Tendency: 0.21 kPa
Visibility: 24 km
Sunrise: 6:18
Sunset: 20:44
Normals:
Max 27°C Min 15°C
 Extended Forecast - Environment Canada
Today
Clearing
Clearing
Max: 25°C
Tue, 4 Aug
Sunny
Sunny
Max: 27°C
Wed, 5 Aug
Chance of showers (30%)
Chance of showers
Max: 30°C
Thu, 6 Aug
Chance of showers (40%)
Chance of showers
Max: 29°C
Fri, 7 Aug
Chance of showers (30%)
Chance of showers
Max: 27°C
Sat, 8 Aug
Chance of showers (40%)
Chance of showers
Max: 28°C
Sun, 9 Aug
A mix of sun and cloud
A mix of sun and cloud
Max: 26°C
Tonight
Clear
Clear
Min: 11°C
Night
Clear
Clear
Min: 12°C
Night
Clear
Clear
Min: 16°C
Night
Chance of showers (40%)
Chance of showers
Min: 19°C
Night
Cloudy periods
Cloudy periods
Min: 18°C
Night
Cloudy periods
Cloudy periods
Min: 18°C
 

Forecast

London, ON (Issued: 5:00 AM EDT Monday 3 August 2026)

Today
Clearing early this morning. Wind becoming north 20 km/h gusting to 40 this morning. High 25. Humidex 30. UV index 8 or very high.
Tonight
Clear. Low 11.
Tue, 4 Aug
Sunny. High 27. Humidex 30. UV index 9 or very high.
Night
Clear. Low 12.
Wed, 5 Aug
A mix of sun and cloud with 30 percent chance of showers. High 30.
Night
Clear. Low 16.
Thu, 6 Aug
Cloudy with 40 percent chance of showers. High 29.
Night
Cloudy with 40 percent chance of showers. Low 19.
Fri, 7 Aug
A mix of sun and cloud with 30 percent chance of showers. High 27.
Night
Cloudy periods. Low 18.
Sat, 8 Aug
A mix of sun and cloud with 40 percent chance of showers. High 28.
Night
Cloudy periods. Low 18.
Sun, 9 Aug
A mix of sun and cloud. High 26.

24 Hour Forecast - London, ON

Date/Time Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
3 August 2026
10 AM 20 Sunny (0%)  Sunny 0 N 20 gust 40
11 AM 21 Mainly sunny (0%)  Mainly sunny 0 N 20 gust 40
12 PM 22 Mainly sunny (0%)  Mainly sunny 0 N 20 gust 40
1 PM 23 Sunny (0%)  Sunny 0 N 20 gust 40
2 PM 24 Sunny (0%)  Sunny 0 NW 20
3 PM 24 Sunny (0%)  Sunny 0 NW 20
4 PM 25 Sunny (0%)  Sunny 0 NW 20
5 PM 25 Sunny (0%)  Sunny 0 NW 15
6 PM 23 Sunny (0%)  Sunny 0 NW 15
7 PM 21 Sunny (0%)  Sunny 0 NW 15
8 PM 19 Sunny (0%)  Sunny 0 NW 10
9 PM 18 Clear (0%)  Clear 0 NW 10
10 PM 16 Clear (0%)  Clear 0 NW 10
11 PM 15 Clear (0%)  Clear 0 VR 5
4 August 2026
12 AM 14 Clear (0%)  Clear 0 VR 5
1 AM 13 Clear (0%)  Clear 0 VR 5
2 AM 12 Clear (0%)  Clear 0 VR 5
3 AM 12 Clear (0%)  Clear 0 VR 5
4 AM 11 Clear (0%)  Clear 0 VR 5
5 AM 11 Clear (0%)  Clear 0 VR 5
6 AM 12 Sunny (0%)  Sunny 0 VR 5
7 AM 14 Sunny (0%)  Sunny 0 VR 5
8 AM 15 Sunny (0%)  Sunny 0 VR 5
9 AM 18 Sunny (0%)  Sunny 0 VR 5
 
† 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