I've lived in southern California for 63 years and it's not extraordinary to have an oddball 100° day in February or March, after all we live in a desert. So far this year we've had two 100° days and they were both in March. What is extraordinary is to have it hit only 75° on the Fourth of July. We normally get 5-6 of 100+° days in July, but so far the warmest day was 85°. The last few summers have been cooler than normal no matter how much deep red fake news shows for our area.