For me, the warmest weather on the Northern California Coast in the last 12 months was December 2020

 However, November and other winter months could be warm or cold like November or January or February. However, from April until the last week or so it's been mostly cloudy as in high or low fog along the coast where I live. Normally, we have June Glooms which means "Fog in June" but now it's 6 months of fog here in Global Warming and Global Climate change. So, it's possible there will be a lot of warm weather interspersed with cold weather (which likely wouldn't be considered cold in most of the U.S. simply because we don't usually get down to Freezing either rarely or not at all here on the Northern California coast near San Francisco.

You might ask: "Is this normal?" Far from it. It's like this crazy weather worldwide now and likely these crazy changes (of various kinds) nationwide will only increase.