A low-pressure trough has moved onshore this morning and precipitation is beginning to spread across Eastern Washington. As the weak weather system moves east, our skies will clear through the late morning/early afternoon as drier air moves into Northcentral Washington from the northwest. Winds will also increase through the morning hours and peak between noon and 4:00 p.m. Gusts of 30 to 40 mph are expected, with some localized gusts to 45 mph. Potential impacts include choppy lakes and unsecured items blowing around. There is a low chance of blowing dust around recently harvested potato fields in Grant County. Today, weather for Northcentral Washington will be sunny and windy out of the northwest 15-25 mph by afternoon with possible gusts up to 35 mph, highs in the mid to upper 50’s.
By Halloween Saturday, the ridge of high pressure off the coast pumps back up across the Inland Northwest creating dry, stable conditions and unseasonably mild temperatures. Halloween weather forecast calling for sunny skies, light wind with afternoon high temperatures in the mid 50’s. There is also a good chance that fog will develop overnight Saturday and linger into Sunday morning. However, by afternoon, another ridge of high pressure is expected to be over the Inland Northwest leading to an uneventful day weather-wise with sunshine and high temperatures in the mid to upper 50’s.
Monday will remain quiet with partly cloudy skies and highs in the upper 50’s. But, increasing upper level moisture is expected to being more clouds to Northcentral Washington by Monday night.
By early Tuesday, the weather system moves in bringing mostly cloudy skies, a 30% chance of daytime rain, a 40 % chance Tuesday night with high temperatures in the mid 50’s.
The zonal weather-flow pattern is expected to last for the rest of the forecast period Wednesday and Thursday as well with mostly cloudy skies each day, a 30-40% chance of showers and afternoon high temperatures in the mid to upper 50’s.