The weather in Sarnia in December is very cold with temperatures between -3°C and 2°C, warm clothes are a must.
You can expect rain for roughly half of the month of December in Sarnia. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
You can expect a few days of snow in Sarnia during December. It’s important to get out your snow boots and warm mittens to stay warm while you explore Sarnia.
Our weather forecast can give you a great sense of what weather to expect in Sarnia in December 2024.
If you’re planning to visit Sarnia in the near future, we highly recommend that you review the 14 day weather forecast for Sarnia before you arrive.
Temperatures
2° / -3°
Rainy Days
9
Snowy Days
3
Dry Days
19
Rainfall
24
mm
Sun Hours
0.9
Hrs
