Two more warm days, then cooling trend

Two more days of warm weather with highs near 90 degrees should keep the Inland Northwest feeling like summer. But then a change begins with a gradual cooling trend that forecasters said could result in highs only in the upper 60s to about 70 on Labor Day. Highs today are expected to reach 92 in downtown Spokane, Spokane Valley and Post Falls and 93 in Coeur d’Alene with mostly sunny skies and light wind from the east. Similar highs are forecast for Wednesday, and overnight lows should be in the lower 60s. Then a Pacific low pressure system moves onshore from the west bringing cooler air, clouds and a slight chance of showers. A broad trough of low pressure along the coast is expected to swing impulses of clouds and possible showers across the region for several days. A pair of cold fronts with little precipitation are expected late Wednesday and again late Friday. Any precipitation at all is most likely on Friday evening, and will be light and short-lived, said forecaster Kerry Jones. Additional showers could fall in higher elevations in the mountains where lows could dip into the 30s over the weekend. Highs on Thursday and Friday should make it into the 80s, but then the temperature drops again to the 70s on Saturday and Sunday and even the upper 60s to about 70 by Monday. Lows will go from the lower 60s to upper 40s and lower 50s through the same period. “It will be the temperature change that will be most noticeable,” Jones said. At 7 a.m., temperatures were once again mild with 62 at Spokane International Airport and Coeur d’Alene, 55 in Sandpoint, 54 in Deer Park and 67 in Pullman. The high at the airport Monday was 86.