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Observed at: London Int'l Airport
Date: 6:00 PM EDT Monday 21 September 2026
Mostly Cloudy
Mostly Cloudy 		Temp.: 13 °C
Wind: E 21 km/h
Humidity: 71 %
Dew point: 8 °C
Pressure: 102.3 kPa
Tendency: 0.04 kPa
Visibility: 24 km 		Sunrise: 7:11
Sunset: 19:25
Normals:
Max 20°C Min 9°C
 Extended Forecast - Environment Canada
  Tue, 22 Sep
Mainly cloudy
Mainly cloudy
Max: 17°C
 Wed, 23 Sep
Cloudy
Cloudy
Max: 20°C
 Thu, 24 Sep
Sunny
Sunny
Max: 20°C
 Fri, 25 Sep
Sunny
Sunny
Max: 20°C
 Sat, 26 Sep
Sunny
Sunny
Max: 20°C
 Sun, 27 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 20°C
Tonight
Partly cloudy
Partly cloudy
Min: 7°C
 Night
Mainly cloudy
Mainly cloudy
Min: 11°C
 Night
Cloudy periods
Cloudy periods
Min: 9°C
 Night
Clear
Clear
Min: 5°C
 Night
Clear
Clear
Min: 6°C
 Night
Cloudy periods
Cloudy periods
Min: 8°C

Forecast

London, ON (Issued: 3:30 PM EDT Monday 21 September 2026)

Tonight
Partly cloudy. Wind northeast 20 km/h gusting to 40 becoming light this evening. Low 7.
Tue, 22 Sep
Mainly cloudy. Wind becoming northeast 30 km/h gusting to 50 in the morning. High 17. UV index 5 or moderate.
Night
Mainly cloudy. Wind northeast 30 km/h. Low 11.
Wed, 23 Sep
A mix of sun and cloud. High 20.
Night
Clearing. Low 9.
Thu, 24 Sep
Sunny. High 20.
Night
Clear. Low plus 5.
Fri, 25 Sep
Sunny. High 20.
Night
Clear. Low 6.
Sat, 26 Sep
Sunny. High 20.
Night
Cloudy periods. Low 8.
Sun, 27 Sep
A mix of sun and cloud. High 20.

24 Hour Forecast - London, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
21 September 2026
7 PM 14 Partly cloudy (20%)  Partly cloudy 20 NE 20 gust 40
8 PM 13 Partly cloudy (20%)  Partly cloudy 20 NE 15
9 PM 12 Partly cloudy (20%)  Partly cloudy 20 NE 15
10 PM 11 Partly cloudy (20%)  Partly cloudy 20 NE 15
11 PM 10 Partly cloudy (20%)  Partly cloudy 20 NE 15
22 September 2026
12 AM 9 Partly cloudy (20%)  Partly cloudy 20 NE 15
1 AM 9 Partly cloudy (20%)  Partly cloudy 20 NE 15
2 AM 8 Partly cloudy (20%)  Partly cloudy 20 NE 15
3 AM 8 Partly cloudy (20%)  Partly cloudy 20 NE 15
4 AM 7 Partly cloudy (20%)  Partly cloudy 20 NE 15
5 AM 7 A few clouds (20%)  A few clouds 20 NE 15
6 AM 8 Partly cloudy (20%)  Partly cloudy 20 NE 15
7 AM 8 A mix of sun and cloud (20%)  A mix of sun and cloud 20 NE 15
8 AM 9 A mix of sun and cloud (20%)  A mix of sun and cloud 20 NE 20 gust 40
9 AM 10 A mix of sun and cloud (20%)  A mix of sun and cloud 20 NE 20 gust 40
10 AM 12 Mainly cloudy (20%)  Mainly cloudy 20 NE 20 gust 40
11 AM 13 Mainly cloudy (20%)  Mainly cloudy 20 NE 30 gust 50
12 PM 14 Mainly cloudy (20%)  Mainly cloudy 20 NE 30 gust 50
1 PM 15 Mainly cloudy (20%)  Mainly cloudy 20 NE 30 gust 50
2 PM 16 Mainly cloudy (20%)  Mainly cloudy 20 NE 30 gust 50
3 PM 16 Mainly cloudy (20%)  Mainly cloudy 20 NE 30 gust 50
4 PM 17 Mainly cloudy (20%)  Mainly cloudy 20 NE 30 gust 50
5 PM 17 Mainly cloudy (20%)  Mainly cloudy 20 NE 30 gust 50
6 PM 16 Cloudy (10%)  Cloudy 10 NE 30
 
† 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