Frost advisory issued for parts of the GTA, warmer temperatures arrive Friday
Posted May 11, 2026 8:12 am.
Last Updated May 12, 2026 9:24 am.
A yellow frost advisory has been ended for parts of the GTA as below seasonal temperatures continue. However, they are set to improve by the long weekend.
Environment Canada issued the advisory early Monday morning for Peel, York, and Durham regions, Hamilton, Caledon and Halton Hills.
Toronto and the rest of the GTA were not included in the advisory, but were expected to see a risk of frost overnight with lows between 1 C and 3 C.
Monday’s high will be 13 C, as highs in the low double digits will last through Thursday before a forecast high of 19 degrees on Friday.
Showers are also expected on Tuesday and Wednesday.
Early forecasts for the long weekend predict warm temperatures, with highs in the 20s and some showers possible.
Extended forecast
Monday: High: 13 C, Low: 1 C – Mostly cloudy
Tuesday: High: 14 C, Low: 7 C – Scattered showers
Wednesday: High: 16 C, Low: 7 C – Thunderstorms and hail
Thursday: High: 16 C, Low: 7 C – Partly cloudy
