The Metro Vancouver weather forecast calls for rain all week long as well as some heavy rainfall in the next couple of days.
Starting on Tuesday, Dec. 17, Environment Canada calls for periods of rain with up to 5 to 10 mm of rainfall during the day. The afternoon is expected to be windy, while the evening will see periods of rain. Following this, however, Wednesday is expected to see heavy rainfall, with rainfall amounts of 15 to 25 mm during the day; the evening will see showers. Wind southeast 30 km/h except 50 km/h near the water in the afternoon.
After this, Thursday, Friday, and Saturday are expected ot see rain. Sunday and Mondya's forecasts call for a 60 per cent chance of rainfall. Daily highs will range between 6°C and 9°C with lows between 2°C and 6°C.

B.C. Winter Forecast
Back in September, The Weather Network predicted that British Columbia would have a milder winter, but that December was a “wild card.”
Since then, the winter forecast has been updated to include the most recent prediction, which calls for milder temperatures along the B.C. coast and across much of Northern B.C. While northeastern B.C. to the southern interior will see near normal temperatures.
While the north coast region is, “expected to see above average rainfall and alpine snow,” the south coast region is expected to be drier than normal. With this in mind, the forecast adds that this dry pattern may break at times during the season. During these breaks, the Lower Mainland could have the, “potential to see several weeks’ worth of precipitation in just 5 to 10 days.”