Keep those sunglasses handy, dress for a very warm afternoon, and be prepared for gusty winds across northern California today. Skies are clear across northern California this morning and will stay sunny today. A ridge of high pressure is set up off the coast in the Pacific and will be one of the dominant features of our forecast this week. Low pressure dropping south into Nevada from the Pacific Northwest will start to bring stronger north winds into our forecast today, and could even bring some very light showers to the Sierra Tuesday and Wednesday. Downslope winds have kept temperatures much warmer in our lower elevations to start the day, but our higher elevations are still brisk. Valley and foothill areas will range from the 40's to lower 60's to start your Monday, and our higher elevations are in the 20's to 40's early today. Sustained winds up to 20mph out of the north are expected, and gusts up to 30mph out of the north are possible in the valley today. High temperatures are projected to end up in the low to mid 80's in the valley, in the 70's in the foothills, and in the 60's to 70's in our mountain zones on Monday afternoon. The dry, windy, and warm weather will make fire danger a concern today, and you should use extra caution.
Low pressure will be centered just to our east on Tuesday, and will drive stronger north winds across northern California. Sustained north winds to 30mph are possible, and we could see gusts up to 45mph on Tuesday. This will drive higher concerns for fire danger on Tuesday. Temperatures will end up around 8 degrees cooler in most areas on Tuesday afternoon. We'll have mid to high 70's in the valley, and 50's to 60's in our foothill and mountain areas. Valley and Northern Mountain areas will remain sunny to mostly sunny, but some clouds will move into the foothills and Sierra on Tuesday. There is a decent chance for some very light showers in the Sierra and Foothills, and we cannot rule out the potential for thunderstorms on Tuesday and Wednesday afternoon. Wednesday looks fairly similar to Tuesday, but we are not expecting winds to be as strong. The temperature trend will remain the same, and we will still have a chance for some very modest shower activity in the Sierra. There will be a very slight threat of thunderstorms in that area on Wednesday afternoon as well.
The low pressure centered in Nevada will track to our east on Thursday, and high pressure off the coast will build into the West Coast. This will result in mostly mild weather on Thursday, but a big warming trend on the way in your late week and weekend forecast. We'll have sunny skies across the board for northern California from Friday through your weekend. Valleya reas can expect high temperatures in the lower 80's on Friday, mid 80's on Saturday, and upper 80's to lower 90's on Sunday. Foothill areas will end up in the 60's to mid 70's on Friday, mid to high 70's on Saturday, and 70's to 80's on Sunday. Mountain areas can expect high temperatures in the 60's to 70's on Friday, mid to high 70's on Saturday, and 70's to 80's on Sunday.