Your Guide to Saint John’s Weather This Week

Get ready for a mixed bag of weather in Saint John this week. You can expect periods of rain separated by a stretch of clear, cooler days, perfect for autumn activities. Here’s what we know about the forecast from October 23 to October 29.

All data for this forecast is provided by weatherin.org, based on information last updated on October 23, 2025.

Day-by-Day Forecast

Thursday, October 23: The week starts with wet weather. Expect light rain throughout the day, with a high of 14°C and a low of 10°C. Winds will be noticeable, reaching speeds of around 25 km/h.

Friday, October 24: The rain clears out completely, making way for a beautiful, clear day. Temperatures will remain pleasant with a high of 14°C, but will drop to a cooler 7°C overnight. It’s a great day to get outside and enjoy the sunshine.

The Weekend (Oct 25-26): Your weekend looks dry and sunny, but temperatures will begin to drop. Saturday will see broken clouds with a high of 12°C and a low of 5°C. Sunday gets even cooler, with a high of only 9°C and an overnight low dipping to 2°C under overcast skies. Plan to bundle up if you have outdoor plans.

Next Week (Oct 27-29): The new week begins with a slight chance of light rain on Monday, with temperatures holding steady at a high of 10°C. Tuesday brings broken clouds and a high of 12°C. The weather cools down again by Wednesday, with a high of just 8°C under overcast skies. The entire period from Monday to Wednesday is forecast to be mostly dry.

Frequently Asked Questions

What days will be rainy this week in Saint John?
Light rain is expected on Thursday, October 23, with a small chance of more light rain on Monday, October 27. The rest of the week is forecast to be dry.

What is the coldest day expected in the forecast?
Sunday, October 26, is expected to be the coolest day, with a high of 9°C and a low of 2°C.

Will the weekend be clear for outdoor activities?
Yes, the forecast for Saturday and Sunday shows clear, dry conditions, although temperatures will be cool, especially on Sunday.