Historical weather data, all-time temperature records, and monthly climate averages for McKinleyville, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in McKinleyville is typically a cool, mostly dry spring day, with highs averaging 56° and lows around 40°. There's about a 1-in-3 chance of seeing some rain, though snow is essentially unheard of. The date's range tells an interesting story: 2017 brought a balmy 65° high, while 2009 dipped to a sharp 29° low.
McKinleyville's weather is defined by its remarkable mildness — the all-time record high of just 96° (set September 2, 2017) would be a routine summer afternoon in much of the country. On the other end, a 22° freeze on December 17, 2005 represents the coldest the town has ever recorded. Rain is where things get dramatic: a single day in late December 2002 dropped 6.29 inches.
McKinleyville runs one of the most compressed temperature ranges you'll find anywhere in the US — monthly average highs span only 11 degrees, from 54° in the coolest weeks of late February to 65° in mid-August. If you're chasing the warmest, driest stretch, aim for late summer through early fall. Winter is when the rain arrives in earnest, with late December averaging over 2 inches in a single week.