Guelph 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Guelph 7-day weather forecast

Stacker created the forecast for Guelph, Ontario using data from OpenWeather. This week's high is 29 °C on Thursday, while the low is 7 °C on Saturday. There are expected to be 4 sunny days and precipitation on 0 days this week.

There are currently no weather alerts.

Monday, September 15

- High of 27 °C, low of 13 °C (51% humidity)
- Fair with a 0% chance of snow
- High risk of harm from sun exposure (6 UV index)
- Light breeze (14 km/h wind)
- Sunrise at 7:00 AM, sunset at 7:31 PM
1 / 6
Nataliia K // Shutterstock

Tuesday, September 16

- High of 25 °C, low of 12 °C (48% humidity)
- Partly cloudy with a 0% chance of snow
- High risk of harm from sun exposure (6 UV index)
- Light breeze (16 km/h wind)
- Sunrise at 7:01 AM, sunset at 7:29 PM
2 / 6
afoto6267 // Shutterstock

Wednesday, September 17

- High of 28 °C, low of 13 °C (37% humidity)
- Fair with a 0% chance of snow
- High risk of harm from sun exposure (6 UV index)
- Light air (12 km/h wind)
- Sunrise at 7:02 AM, sunset at 7:28 PM
3 / 6
supergenijalac // Shutterstock

Thursday, September 18

- High of 29 °C, low of 15 °C (31% humidity)
- Sunny with a 0% chance of snow
- High risk of harm from sun exposure (6 UV index)
- Light breeze (18 km/h wind)
- Sunrise at 7:04 AM, sunset at 7:26 PM
4 / 6
Saijai Boonmak // Shutterstock

Friday, September 19

- High of 23 °C, low of 13 °C (35% humidity)
- Partly cloudy with a 0% chance of snow
- Light breeze (24 km/h wind)
- Sunrise at 7:05 AM, sunset at 7:24 PM
5 / 6
LeManna // Shutterstock

Saturday, September 20

- High of 17 °C, low of 7 °C (40% humidity)
- Sunny with a 0% chance of snow
- Light breeze (21 km/h wind)
- Sunrise at 7:06 AM, sunset at 7:22 PM
6 / 6
Nazarova Mariia // Shutterstock

Sunday, September 21

- High of 26 °C, low of 8 °C (37% humidity)
- Partly cloudy with a 0% chance of snow
- Light breeze (17 km/h wind)
- Sunrise at 7:07 AM, sunset at 7:20 PM
- New moon

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