Environment Canada has issued a frost advisory for Grimsby and the surrounding St. Catharines and Northern Niagara region for May 1, 2026. Residents and local farmers should prepare for temperatures near freezing tonight, which may cause damage to sensitive plants and crops.
According to weather data, temperatures will reach a daytime high of 10°C today, following a morning temperature of 5.4°C at the Vineland Station. However, forecasters expect conditions to drop to 0°C tonight, with a further risk of frost continuing into Saturday night as temperatures hover around plus 1°C in clear areas.
The frost advisory is particularly significant for this region, which serves as a major agricultural hub. The Grape Growers of Ontario, an organization that represents over 500 active grape growers managing 18,000 acres of vineyards, notes that late-season frost remains a persistent concern for local crops. Experts like warning preparedness meteorologist Monica Vaswani have noted that while frost timing can vary, advisories in this part of Ontario are common through early May.
Residents are encouraged to cover vulnerable vegetation and protect trees, especially those located in areas known to be more prone to frost. The public is asked to continue monitoring local weather updates. Anyone looking to report severe weather can contact the federal weather agency by email at [email protected] or by using #ONStorm on social media.
