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Observed at: London Int'l Airport
Date: 5:00 PM EDT Wednesday 24 September 2025
Light Rainshower
Light Rainshower 		Temp.: 20 °C
Wind: NE 17 km/h
Humidity: 86 %
Dew point: 17 °C
Pressure: 101.5 kPa
Tendency: 0.11 kPa
Visibility: 16 km 		Sunrise: 7:14
Sunset: 19:19
Normals:
Max 19°C Min 9°C
 Extended Forecast - Environment Canada
  Thu, 25 Sep
Chance of showers (30%)
Chance of showers
Max: 22°C
 Fri, 26 Sep
Sunny
Sunny
Max: 24°C
 Sat, 27 Sep
Sunny
Sunny
Max: 24°C
 Sun, 28 Sep
Sunny
Sunny
Max: 26°C
 Mon, 29 Sep
Sunny
Sunny
Max: 25°C
 Tue, 30 Sep
Sunny
Sunny
Max: 23°C
Tonight
Chance of showers (60%)
Chance of showers
Min: 16°C
 Night
Chance of showers or drizzle (30%)
Chance of showers or drizzle
Min: 14°C
 Night
Clear
Clear
Min: 12°C
 Night
Clear
Clear
Min: 12°C
 Night
Clear
Clear
Min: 12°C
 Night
Clear
Clear
Min: 11°C

Forecast

London, ON (Issued: 3:30 PM EDT Wednesday 24 September 2025)

Tonight
Cloudy. 60 percent chance of showers this evening and after midnight. Showers in thunderstorms early this evening. Risk of a thunderstorm this evening. Fog patches developing overnight. Local amount 40 mm in thunderstorms. Low 16.
Thu, 25 Sep
Cloudy. 30 percent chance of showers in the afternoon. Fog patches dissipating in the morning. High 22. Humidex 27. UV index 4 or moderate.
Night
Mainly cloudy. 30 percent chance of showers or drizzle before morning. Fog patches developing before morning. Low 14.
Fri, 26 Sep
Sunny. High 24.
Night
Clear. Low 12.
Sat, 27 Sep
Sunny. High 24.
Night
Clear. Low 12.
Sun, 28 Sep
Sunny. High 26.
Night
Clear. Low 12.
Mon, 29 Sep
Sunny. High 25.
Night
Clear. Low 11.
Tue, 30 Sep
Sunny. High 23.

24 Hour Forecast - London, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
24 September 2025
6 PM 19 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 E 10
7 PM 18 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 E 10
8 PM 17 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 E 10
9 PM 17 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 E 10
10 PM 17 Chance of showers (60%)  Chance of showers 60 E 10
11 PM 17 Chance of showers (60%)  Chance of showers 60 VR 5
25 September 2025
12 AM 17 Chance of showers (60%)  Chance of showers 60 VR 5
1 AM 16 Chance of showers (60%)  Chance of showers 60 VR 5
2 AM 16 Chance of showers (60%)  Chance of showers 60 VR 5
3 AM 16 Cloudy (20%)  Cloudy 20 VR 5
4 AM 16 Cloudy (20%)  Cloudy 20 VR 5
5 AM 16 Cloudy (20%)  Cloudy 20 VR 5
6 AM 16 Cloudy (20%)  Cloudy 20 VR 5
7 AM 17 Cloudy (20%)  Cloudy 20 VR 5
8 AM 17 Cloudy (20%)  Cloudy 20 VR 5
9 AM 17 Cloudy (20%)  Cloudy 20 VR 5
10 AM 18 Cloudy (20%)  Cloudy 20 VR 5
11 AM 18 Cloudy (20%)  Cloudy 20 NW 10
12 PM 19 Chance of showers (30%)  Chance of showers 30 NW 10
1 PM 21 Chance of showers (30%)  Chance of showers 30 NW 10
2 PM 22 Chance of showers (30%)  Chance of showers 30 NW 10
3 PM 21 Chance of showers (30%)  Chance of showers 30 NW 10
4 PM 21 Chance of showers (30%)  Chance of showers 30 NW 10
5 PM 20 Chance of showers (30%)  Chance of showers 30 NW 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