London 7-day weather forecast

Written by:
August 4, 2025
ESOlex // Shutterstock

London 7-day weather forecast

Stacker created the forecast for London, Ontario using data from OpenWeather. This week's high is 34 °C on Saturday, while the low is 15 °C on Monday. There are expected to be 4 sunny days and rain on 1 day this week.

Environment Canada, the Province of Ontario has issued an air quality until Monday at 12:58 PM.

Monday, August 4

- High of 28 °C, low of 15 °C (28% humidity)
- Fair with a 0% chance of snow
- High risk of harm from sun exposure (6 UV index)
- Light breeze (19 km/h wind)
- Sunrise at 6:19 AM, sunset at 8:42 PM
1 / 6
VOJTa Herout // Shutterstock

Tuesday, August 5

- High of 32 °C, low of 18 °C (28% humidity)
- Overcast with a 0% chance of snow
- High risk of harm from sun exposure (7 UV index)
- Light breeze (24 km/h wind)
- Sunrise at 6:20 AM, sunset at 8:41 PM
2 / 6
Zyabich // Shutterstock

Wednesday, August 6

- High of 30 °C, low of 17 °C (24% humidity)
- Mostly cloudy with a 0% chance of snow
- High risk of harm from sun exposure (7 UV index)
- Light breeze (26 km/h wind)
- Sunrise at 6:21 AM, sunset at 8:40 PM
3 / 6
Leonid Ikan // Shutterstock

Thursday, August 7

- High of 30 °C, low of 17 °C (37% humidity)
- Sunny with a 0% chance of snow
- Very high risk of harm from sun exposure (8 UV index)
- Light breeze (21 km/h wind)
- Sunrise at 6:22 AM, sunset at 8:38 PM
4 / 6
Leonid Ikan // Shutterstock

Friday, August 8

- High of 32 °C, low of 19 °C (37% humidity)
- Sunny with a 0% chance of snow
- Light breeze (26 km/h wind)
- Sunrise at 6:23 AM, sunset at 8:37 PM
5 / 6
Gaschwald // Shutterstock

Saturday, August 9

- High of 34 °C, low of 20 °C (33% humidity)
- Sunny with a 0% chance of rain
- Light breeze (25 km/h wind)
- Sunrise at 6:24 AM, sunset at 8:36 PM
- Full moon
6 / 6
Alex Stemmer // Shutterstock

Sunday, August 10

- High of 32 °C, low of 20 °C (45% humidity)
- Overcast with a 100% chance of rain (6 mm of rain)
- Gentle breeze (28 km/h wind)
- Sunrise at 6:25 AM, sunset at 8:34 PM

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