SPOKANE, Wash. - We are now directly under a very large and strong ridge of high pressure covering the entire western part of the US and southwest Canada.
This means air is slowly sinking from above, trapping whatever is below, keeping it from moving away. It's prime breeding ground for fog, low clouds and cool and moist air which collects in the valleys overnight. The weak winter sun is not strong enough to burn through it during the day. This pattern should persist into the weekend. Temperatures will be fairly mild, with daytime highs in the mid to upper 30s, and overnight lows in the upper 20s to low 30s.
It looks like Thursday will be another gloomy day. But, if you want to see some sunshine, head for the hills! More appropriately, head for the mountains. Above 4,000 feet the skies should be quite sunny. Down here in the low lands expect a low overcast and temperatures rising from the upper 20s to the mid 30s.
Friday, Saturday and Sunday the weather should be much the same. Clouds will rule and temperatures may go up a degree or two each day, but not substantially. Look for highs in the upper 30-40 degrees on the weekend. There are indications that the weather will turn colder next week, but also a bit brighter.