Sarnia

Brief period of freezing rain possible Wednesday.

What:
Brief period of freezing rain with minor ice accretion on some surfaces possible.
Surfaces such as highways, roads, walkways and parking lots may become icy, slippery and hazardous.

When:
Wednesday morning to early Wednesday evening.

Additional information:
A brief period of freezing rain is possible before a transition to rain. For locations near Lake Ontario, temperatures will likely remain above the freezing mark.

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Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Rain, heavy at times is expected. The ground, already near saturation, has little ability to absorb further rainfall.

What:
Rain, at times heavy. Total rainfall amounts of 30 to 50 mm. Locally higher amounts are possible if thunderstorms repeatedly impact the same area.

When:
Wednesday morning through early Thursday morning.

Additional information:
Rain begins Wednesday morning over extreme southwestern Ontario before reaching the Golden Horseshoe Wednesday afternoon. With thunderstorms expected, rainfall amounts may exceed 50 mm over some areas, particularly over southwestern Ontario. Rain will end from west to east overnight into early Thursday morning.

For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit Ontario.ca/floods for the latest details.

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Localized flooding in low-lying areas is possible. Heavy downpours can cause flash floods and water pooling on roads.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

The day will start with partly cloudy with rain through the late morning hours, transitioning to rain with snow

You can expect partly cloudy in the morning, with rain in the afternoon

You can expect partly cloudy with rain in the morning, with snow in the afternoon

Expect a day of partly cloudy with clear spells

Messy winter weather is expected in parts of Lambton County.Environment Canada upgraded its snow squall watch to a warning for north and east Lambton at around 3:25 p.m. Tuesday.The national weather agency says intermittent flurries can be expected throughout the day Tuesday.However, stronger snow squalls off Lake Huron are expected Tuesday night into Wednesday with local snowfall accumulations of 15 to 25 centimetres.Higher amounts are possible if snow squalls become stationary over one area."Snow squalls cause weather conditions to vary considerably; changes from clear skies to heavy snow within just a few kilometres are common," read the statement from Environment Canada.Environment Canada said reduced visibility at times is likely in heavy and blowing snow.We're advised to consider postponing non-essential travel until conditions improve.

Rain (Photo by Doctor_bass/iStock/Getty Images Plus via Getty Images)

Midwestern

Windsor

Chatham

Heavy rainfall (photo by Tamara Thornton, Blackburn Media)

Sarnia's Canatara Park Beach Lifeguard Office. BlackburnNews.com (File photo by Melanie Irwin)

Sarnia police uniform logos. Photo courtesy Sarnia Police Service.

Sarnia City Hall. October, 2023 Blackburn Media photo by Melanie Irwin

Norm Perry Park phasing plan. Image courtesy of City of Sarnia, via. council agenda March 31, 2025.

UPDATE: Snow squalls in parts of Lambton County

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