London 7-day weather forecast

Written by:
August 25, 2025
ESOlex // Shutterstock

London 7-day weather forecast

Stacker created the forecast for London, Ontario using data from OpenWeather. This week's high is 28 °C on Wednesday, while the low is 8 °C on Friday. There are expected to be 3 sunny days and rain on 2 days this week.

There are currently no weather alerts.

Monday, September 1

- High of 25 °C, low of 10 °C (27% humidity)
- Sunny with a 0% chance of snow
- High risk of harm from sun exposure (6 UV index)
- Light breeze (19 km/h wind)
- Sunrise at 6:49 AM, sunset at 8:00 PM
1 / 6
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Tuesday, September 2

- High of 27 °C, low of 12 °C (25% humidity)
- Partly cloudy with a 0% chance of snow
- High risk of harm from sun exposure (5 UV index)
- Light breeze (25 km/h wind)
- Sunrise at 6:50 AM, sunset at 7:58 PM
2 / 6
Gary Whitton // Shutterstock

Wednesday, September 3

- High of 28 °C, low of 14 °C (31% humidity)
- Sunny with a 0% chance of snow
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (33 km/h wind)
- Sunrise at 6:52 AM, sunset at 7:56 PM
3 / 6
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Thursday, September 4

- High of 20 °C, low of 12 °C (92% humidity)
- Overcast with a 100% chance of rain (22 mm of rain)
- Moderate risk of harm from sun exposure (5 UV index)
- Light breeze (22 km/h wind)
- Sunrise at 6:53 AM, sunset at 7:55 PM
4 / 6
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Friday, September 5

- High of 19 °C, low of 8 °C (36% humidity)
- Overcast with a 0% chance of snow
- Gentle breeze (28 km/h wind)
- Sunrise at 6:54 AM, sunset at 7:53 PM
5 / 6
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Saturday, September 6

- High of 19 °C, low of 9 °C (33% humidity)
- Sunny with a 0% chance of snow
- Gentle breeze (30 km/h wind)
- Sunrise at 6:55 AM, sunset at 7:51 PM
6 / 6
Robert Schlie // Shutterstock

Sunday, September 7

- High of 15 °C, low of 8 °C (52% humidity)
- Partly cloudy with a 29% chance of rain (0 mm of rain)
- Gentle breeze (27 km/h wind)
- Sunrise at 6:56 AM, sunset at 7:49 PM
- Full moon

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