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Toronto Forecast: Heavy Rain and Late‑Day Thunderstorms Possible Saturday

A moisture‑rich system from the U.S. Midwest could produce 10–20 mm of rain with gusty east winds, so forecasters say residents should monitor for advisories.

Overview

  • Friday will be calm and pleasant with mainly sunny skies and highs near the mid‑20s, offering the best chance for outdoor plans before conditions change.
  • Saturday is expected to be the weekend’s most active day with sun and cloud early and a developing risk of heavy showers and late‑day thunderstorms that could produce 10–20 mm of rain by evening.
  • Forecasters say east winds of about 15–30 km/h will help draw in moisture and instability from the U.S. Midwest, making storms more likely to intensify late in the day.
  • Sunday may begin unsettled with early showers or a few storms before shifting to breaks of sun and scattered showers, and Monday should bring a cooler, more stable pattern with highs near 22°C.
  • Weather specialists and local outlets advise residents to monitor updates and be prepared for possible rainfall advisories, as stronger storms could cause brief localized flooding and disrupt weekend plans.