With a stable air mass in place, fog will once again develop in the overnight hours for the Northstate. For some parts of the area fog will develop with temperatures below freezing, leading to frost.
A weak system will clip the Northstate tomorrow. Best chances of precipitation remain off to the west and north. However, even a stray showers could make it down to the valley.
Conditions gradually improve throughout the day Saturday. Sunday all the way through Wednesday look for mostly sunny skies with highs warming into the mid to upper 50s Monday and Tuesday.