Where I am at, in the Canadian Rockies, the daily temperature this winter was routinely 7-9 degrees Celsius above average (1970-2020) according to my iOS Weather app. They introduced this feature last year and I have been checking it nearly every day. Other than a cold snap in January (that killed my bees!) the weather was warmer every single day.

You're hitting on another issue we gardeners are noticing - overall the temps are warmer, causing things to bud early, but there are still cold snaps. The cold snaps aren't any colder than they should be for the time of year, the problem is the inter-snap days are a lot warmer. This increased variance in temperature is actually worse than the average temperature getting warmer.