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Observed at: London Int'l Airport
Date: 7:00 PM EST Saturday 20 December 2025
Cloudy
Cloudy 		Temp.: 3 °C
Wind: SW 26 gust 35 km/h
Humidity: 65 %
Dew point: -3 °C
Pressure: 100.7 kPa
Tendency: 0.05 kPa
Visibility: 24 km 		Sunrise: 7:52
Sunset: 16:53
Normals:
Max -1°C Min -7°C
 Extended Forecast - Environment Canada
  Sun, 21 Dec
Chance of flurries (40%)
Chance of flurries
Max: -5°C
 Mon, 22 Dec
Chance of flurries (40%)
Chance of flurries
Max: 1°C
 Tue, 23 Dec
Chance of showers (60%)
Chance of showers
Max: 5°C
 Wed, 24 Dec
Sunny
Sunny
Max: 2°C
 Thu, 25 Dec
Chance of showers (40%)
Chance of showers
Max: 7°C
 Fri, 26 Dec
Chance of showers (30%)
Chance of showers
Max: 3°C
Tonight
Chance of flurries (40%)
Chance of flurries
Min: -9°C
 Night
A few clouds
A few clouds
Min: -12°C
 Night
Chance of snow (60%)
Chance of snow
Min: -1°C
 Night
Clear
Clear
Min: -3°C
 Night
Chance of showers (30%)
Chance of showers
Min: 1°C
 Night
Chance of showers (40%)
Chance of showers
Min: 2°C

Forecast

London, ON (Issued: 3:30 PM EST Saturday 20 December 2025)

Tonight
Mainly cloudy with 40 percent chance of flurries. Wind southwest 30 km/h gusting to 50 becoming light this evening. Wind becoming west 40 gusting to 60 after midnight. Low minus 9. Wind chill minus 19 overnight.
Sun, 21 Dec
Cloudy with 40 percent chance of flurries. Wind northwest 30 km/h gusting to 50. High minus 5. Wind chill minus 18 in the morning and minus 11 in the afternoon. UV index 1 or low.
Night
Clearing late in the evening. Wind up to 15 km/h. Low minus 12. Wind chill minus 11 in the evening and minus 18 overnight.
Mon, 22 Dec
Cloudy with 40 percent chance of flurries. High plus 1.
Night
Cloudy with 60 percent chance of snow. Low minus 1.
Tue, 23 Dec
Cloudy with 60 percent chance of showers. Windy. High plus 5.
Night
Clear. Windy. Low minus 3.
Wed, 24 Dec
Sunny. High plus 2.
Night
Cloudy with 30 percent chance of showers. Low plus 1.
Thu, 25 Dec
Cloudy with 40 percent chance of showers. High 7.
Night
Cloudy with 40 percent chance of showers. Low plus 2.
Fri, 26 Dec
Cloudy with 30 percent chance of showers. High plus 3.

24 Hour Forecast - London, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
20 December 2025
8 PM 2 Chance of flurries (40%)  Chance of flurries 40 SW 30 gust 50
9 PM 1 Partly cloudy (20%)  Partly cloudy 20 SW 15
10 PM 1 A few clouds (20%)  A few clouds 20 SW 15
11 PM 0 Partly cloudy (20%)  Partly cloudy 20 SW 15
21 December 2025
12 AM -2 Mainly cloudy (20%)  Mainly cloudy 20 SW 15
1 AM -3 Cloudy (20%)  Cloudy 20 W 40 gust 60
2 AM -5 Chance of flurries (40%)  Chance of flurries 40 W 40 gust 60
3 AM -6 Chance of flurries (40%)  Chance of flurries 40 W 40 gust 60
4 AM -8 Chance of flurries (40%)  Chance of flurries 40 W 40 gust 60
5 AM -8 Chance of flurries (40%)  Chance of flurries 40 W 40 gust 60
6 AM -9 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
7 AM -9 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
8 AM -9 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
9 AM -8 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
10 AM -8 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
11 AM -7 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
12 PM -6 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
1 PM -5 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
2 PM -5 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
3 PM -5 Chance of flurries (40%)  Chance of flurries 40 NW 30 gust 50
4 PM -5 Cloudy (20%)  Cloudy 20 NW 30 gust 50
5 PM -6 Mainly cloudy (20%)  Mainly cloudy 20 NW 30 gust 50
6 PM -6 Mainly cloudy (20%)  Mainly cloudy 20 SW 10
7 PM -7 Partly cloudy (0%)  Partly cloudy 0 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