Most trips are too short to get the engine up to optimal operating temperature in winter. Cold engines have terrible efficiency, so you lose quite a bit of range in day-to-day driving during winter.

Anyone who owns a hybrid in the northland probably notices a dip in gas mileage in the winter. My Kia Niro loses about 30% of its gas mileage in the winter months in North Dakota. Its enough of a difference that this will be my last hybrid, and I am going to be very careful when I buy an electric. Since, I live in an apartment currently, I don't really have an option for an electric.

30% isn't that bad. Even petrol cars get similarly bad or worse mileage in the winter.

https://www.fueleconomy.gov/feg/coldweather.shtml

Also cars in general as they age gradually get worse mileage.

> 30% isn't that bad. Even petrol cars get similarly bad or worse mileage in the winter.

From the link you linked, city driving 15% and "as much as 24% for short (3- to 4-mile) trips". That is not really similarly bad or worse.