We'll be staying sunny, warm and dry across Northern California today. Increasing winds out of the West and low humidity have prompted a Red Flag Warning for high fire danger to be issued for areas of Modoc, Lassen, and Plumas Counties from 2PM this afternoon through 9PM tonight. The Warning will expire at 8PM in Modoc County. Sustained winds in that area will be up to 25mph and gusts could reach 40mph, while humidity dips into the single digits to teens in the afternoon. Valley areas will have winds out of the West to around 10mph this afternoon, with moderately stronger gusts. Humidity will end up in the high single digits to teens in lower elevations later today. Fire danger will be high in along the Sierra crest and will be moderate in most of the valley this afternoon.
Temperatures are starting out in the 60's to low 70's in the valley, in the mid to high 60's in the foothills, and in the 40's for most mountain areas this morning under clear skies. We'll be sunny through the day and high temperatures will be close to what we had on Sunday afternoon. Valley areas can expect high temperatures in the mid to high 90's, while foothill areas end up in the mid to high 80's, and mountain areas end up in the mid 80's. The Northern Mountains will top out in the 80's to around 90 degrees this afternoon. Winds are starting out of the Northeast to around 10mph, but will shift to become out of the West this afternoon. Winds will start to pick up tonight, and we could be in for gusts up to 25mph out of the West in the valley. That will result in an uptick in fire danger as we head into this evening.
Not much is expected to change in your weather pattern over the next few days. Low pressure passing through to our North will kick up some Southwest winds and that will help to increase the onshore flow tonight, and that could result in slightly cooler low temperatures on Tuesday. High pressure to our West and to our Southeast will still be the main features impacting our forecast. High temperatures will be slightly cooler on Tuesday afternoon. Temperatures will rebound quickly on Wednesday as the low moves off to our East and high pressure continues it's dominance over our region. Sunny to mostly sunny skies and around average temperatures are expected from mid to late week. That means valley areas will end up in the mid to high 90's, while foothill and mountain areas end up in the 80's to low 90's.
Hotter conditions are expected to return for your weekend. Valley areas will start out in the mid 60's and end up in the 100 to 104 degree range on both Saturday and Sunday. Foothill areas will dip into the mid 60's to low 70's overnight and will end up in the low to mid 90's this weekend. Mountain areas will dip into the 40's to 50's overnight, and top out in the low to mid 90's on Saturday and Sunday.