Mostly mild and hazy conditions are on tap for your Friday forecast across Northern California today. Air quality is slightly worse off than 24 hours ago, but the majority of the valley and Sierra are still in the moderate range this morning. The Northern Mountains and all areas closest to the Oregon border are either in the unhealthy for sensitive groups range or unhealthy range to start the day. If you are in one of those Northern zones of the state you're being advised to limit your activities outdoors today. The setup for today is very similar to Thursday, and temperatures are reflecting that this morning. Valley areas have had temperatures dip into the 50's to low 60's again overnight, and mountain areas are starting out in the 40's for most locations. Winds are a bit stronger out of the Northeast this morning, with several cities in the valley showing sustained winds of 5mph or more to start the day. Winds will shift to become out of the South to 10mph this afternoon. Humidity is projected to stay above 25 percent this afternoon, which is good news for fire danger. Fire danger is expected to stay in the high range today despite the below average temperatures and rising humidity. High temperatures are projected to end up in the 86 to 91 degree range in the valley this afternoon, and in the low to mid 80's in most mountain areas. A few cities in the Northern Mountains may climb back into the low 90's this afternoon.
Temperatures are expected to become slightly warmer through the weekend, but should stay at or below average for this time of year. Valley areas will top out in the high 80's to low 90's for both Saturday and Sunday. Sunday will more than likely end up a degree or two cooler than Saturday for most cities. Overnight low temperatures will be somewhat brisk, and will fall into the 50's in the valley over the next several days. A Fire Weather Watch is currently set to go into effect for the Northern Sierra and Southern Cascades on Sunday afternoon. The warning is currently set to be in place from 1pm Sunday afternoon through 10pm Sunday night. Winds could gust up to 45mph out of the Southwest during that time, and humidity will likely dip into the 15 to 25 percent range.
A more substantial cooling trend will be on the way for next week. Valley areas are currently projected to dip into the low to mid 80's by Wednesday and Thursday of your extended forecast.