Get ready for another chilly & dry day across northern California. Skies are clear to mostly clear this morning, but partly cloudy conditions will return through the day. Temperatures are starting out in the 20's to 30's in the valley and foothills, while mountain areas have dipped into the teens to 20's again overnight. Winds will mostly end up below 10mph out of the north in the valley today, and out of the south in higher elevations. High temperatures will end up in the low to mid 60's in the valley, and in the upper 40's to mid 50's in most mountain areas.
A low pressure area dropping down from the Gulf of Alaska will bring cold and wet conditions into our forecast on Friday. This will resulut in warmer low temperatures, but much cooler high temperatures on Friday. It will also bring moderate to heavy snow to the mountains, moderate rain to the foothills, and light to moderate rain to the valley. Snow levels will mostly be down to around 4000'. A Winter Storm Warning has been issued for Central Siskiyou County and from 10am through 10pm Friday and travel along I-5 north of Redding will be problematic through the day. Valley and foothill areas will dip into the 30's to low 40's on Friday morning, while mountain areas end up in the teens to 20's again early Friday. High temperatures will end up in the upper 40's to lower 50's in the valley, while foothill and mountain areas end up in the 30's to 40's on Friday afternoon.
Most of the showers will taper off overnight Friday into Saturday, but some mountain showers could linger into your Saturday forecast. We'll also see a rebound in high temperatures on Saturday. Valley areas will top out in the upper 50's to lower 60's this weekend, while most mountain and foothill areas end up in the 40's. Another wet system will move through late Saturday night through Sunday, but is only expected to bring minimal rain to the mountains. Dry and warmer weather will return for your Monday, but another cool and wet system is expected to arrive for the middle of next week.