Another record low temperature was set at Sarnia's Chris Hadfield Airport Friday morning.
The air temperature dropped to -24.4 C (-12 F) at 7am.
Environment Canada meteorologist Geoff Coulson says that broke the previous mark of -21.8 C set in 1978.
He says this is shaping up to be one of the coldest months of February ever in Sarnia-Lambton.
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Environment Canada's extreme cold warning ended late Friday morning.
It's going to feel warm Saturday with the forecast high of -3 C within a few degrees of the seasonal norm.
Unfortunately a combination of weather systems will bring snow Friday night and Saturday with 10 cm to 15 cm (4 in to 6 in) possible across parts of Lambton County.
It will turn sharply colder again Monday with a high of -13 C.
