Rainfall warning
A yellow rainfall warning issued at 5:43 a.m. EDT Wednesday indicates moderate impacts are possible as rain, heavy at times, moves through the region today. Forecasters say the saturated or frozen ground will have little ability to absorb the rainfall, with totals of 20 to 40 mm expected and locally higher amounts possible in areas that receive thunderstorms. The rain is forecast to begin this morning and continue through the day as a series of low-pressure systems bring significant precipitation across parts of southern Ontario, with the Huron–Perth region potentially receiving 50 to 60 mm in total. Officials warn that water will likely pool on roads and in low-lying areas, and residents are advised not to drive through flooded roadways, avoid low-lying areas, and watch for washouts near rivers, creeks and culverts. For flooding information, residents should consult their local conservation authority or the Ontario Ministry of Natural Resources, or visit Ontario.ca/floods for updates. Environment Canada also encourages the public to monitor alerts and forecasts and to report severe weather by emailing ONstorm@ec.gc.ca
or posting on X using the hashtag #ONStorm.
Today – March 11, 2026
Showers ending early this morning then cloudy with 60 percent chance of showers this morning. Showers beginning late this morning. Risk of a thunderstorm. Amount 15 to 25 mm. Wind south 20 km/h gusting to 40 becoming northwest 40 gusting to 60 late this afternoon. Temperature falling to plus 4 this afternoon. UV index 2 or low.
Tonight
Cloudy. 30 percent chance of rain showers early this evening then 30 percent chance of flurries this evening. Wind northwest 40 km/h gusting to 60. Low minus 4. Wind chill minus 10 overnight.
Thu, 12 Mar – Clearing in the morning. Wind west 20 km/h gusting to 40. High 6. Wind chill minus 11 in the morning. Night – Increasing cloudiness. Low minus 2.
Fri, 13 Mar – Cloudy with 60 percent chance of snow or rain. High 7. Night – Cloudy periods with 30 percent chance of flurries. Low minus 4.
Sat, 14 Mar – A mix of sun and cloud. High plus 5. Night – Cloudy with 60 percent chance of flurries or rain showers. Low minus 2.
Sun, 15 Mar – Cloudy with 60 percent chance of flurries or rain showers. High plus 4. Night – Cloudy with 60 percent chance of showers. Low minus 6.
Mon, 16 Mar – Cloudy with 60 percent chance of flurries. High minus 3. Night – Cloudy periods with 60 percent chance of flurries. Low minus 11.
Tue, 17 Mar – A mix of sun and cloud. High minus 1.
