Frost advisory to start week ahead of mostly dry Thanksgiving weekend
Posted Oct 4, 2026 10:12:23 AM.
Last Updated Oct 5, 2026 10:40:53 AM.
The first full work week of October is starting off chilly but will warm up as we go on, according to Environment Canada.
Monday is set to bring a mix of sun and cloud with a slight chance of rain, and then frosty conditions overnight.
Environment Canada has issued a Yellow Level – Frost Advisory for Waterloo Region and surrounding areas heading into Tuesday morning as it dips down to the freezing mark.
A mix of sun and cloud is expected Tuesday, reaching a high of 15°C. Tuesday’s overnight low is 4°C.
More cloud coverage is in the forecast Wednesday morning, where there is a 40 per cent chance of light rain that will carry into the afternoon. Skies will begin clearing in the evening, with the high reaching 19°C. Those clouds will stick around Wednesday overnight, with the low dropping down to 7°C.
Next, Thursday will see those conditions continue, with Environment Canada calling for cloudy skies and a 30 per cent chance of showers, the high is 19°C. Overnight, temperatures will cool down to a low of 6°C, with a 30 per cent chance of rain remaining into early Friday morning.
Thanksgiving weekend outlook
As residents prepare for Thanksgiving gatherings, fall fairs, cottage trips and outdoor activities, the early forecast points to generally favourable conditions across Waterloo Region.
Temperatures are expected to ease back toward seasonal levels by Friday, with a high of 17°C under partly cloudy skies and a chance of isolated showers.
Looking ahead to the long weekend, forecasters say Thanksgiving weekend is shaping up to be largely dry and seasonable, offering encouraging news for those planning outdoor celebrations or travel across southern Ontario.
While temperatures are expected to hover near normal early-October values, no widespread or significant rainfall is currently anticipated through most of the holiday weekend.
However, forecasters are monitoring the potential for wetter weather to arrive around midday on Thanksgiving Monday, which could bring increasing cloud cover and the chance of rain later in the day.
You can keep track of Waterloo Region’s forecast on the CityNews Kitchener weather page.