
2nd coldest December in Waterloo region in past 20 years, UW weather station reports
CBC
If you thought December seemed colder and snowier than usual, you're right.
A new report from the E.D. Soulis Memorial Weather Station at the University of Waterloo says December was about three degrees colder than the average.
That makes it the second coldest December in the last 20 years, with the coldest being 2017.
"There was also an interesting spike in the temperature early in the morning of [Dec.] 29 where it went from 0.8 C to 8.9 C in an hour, then down to 4.8 C an hour later and well below zero a few hours after that," the report notes.
When it came to precipitation, there was a lot of that, too. Overall for the month, there was 113.2 millimetres, which was above the average of 72.1 millimetres.
For snow, there was 54.5 centimetres, which the report notes was well above the average of 30.7 centimetres — making last month the snowiest December since 2008. Then on Dec. 28, there was a mix of rain, ice pellets and snow for another 50 millimetres.
"With two months of very high snowfall, the total so far this snowfall season of 113.5 centimetres is well over twice the average of 41.8 centimetres," the report says.
Snow has continued into the new year with Environment and Climate Change Canada's forecast for the area calling for snow through until Tuesday.
Then, a winter warm-up is expected with temperatures rising above zero for a few days.
With the temperatures in flux, the Grand River Conservation Authority (GRCA) is reminding people to stay off ponds, rivers or streams because the conditions could be unsafe.
The authority said colder temperatures have allowed ice to form, there are too many other factors such as daily changes in temperature, wind, precipitation and underwater currents that "greatly affect ice conditions."
"The ice can break easily and should not be used for any winter activity. Higher flows will continue to weaken ice sheets where they have formed," the authority said in a release Friday.
"Snow on top of the ice can hide weak spots and slow the ice from freezing properly."
Ice fishing is not yet open at any GRCA parks.













