A weak cold front will pass by to our north tonight bringing a chance for isolated light showers from Crater Lake north in the Cascades. Showers will end before dawn breaks on the first day of Spring tomorrow, which officially begins for us here on the west coast at 9:57AM. After the cold front passes high pressure will return which will bring warm, sunny and dry conditions back to the region through Monday. A thermal trough will develop over northern California which will cause breezy conditions at the coast, but it will be a warm off-shore flow.
Morning temperatures in west side valleys could reach critical values for our orchardists out there on Friday morning and thus a Freeze Watch has been issued for Jackson county and the Shasta Valley. Temperatures Friday morning could dip to the mid to upper 20s in the coldest spots of the valleys and could damage tender blossoms, especially nectarines, pears and peaches. Wind machines should help keep temperatures slightly warmer, be sure to take precautions. Saturday morning will be another cold one that may require a Freeze Warning to be issued.
Our next chance for showers arrives Tuesday but rain and wind totals at this time look unimpressive, though this has the potential to open the storm door bringing a more active pattern next week.
Meteorologist Megan Parry