SPOKANE, Wash. – A stretch of frosty mornings is taking hold across the Inland Northwest, with clear skies and calm winds creating ideal conditions for rapid overnight cooling. Temperatures dipped into the low 30s early Tuesday, and more widespread frost is expected each morning through Thursday.
According to the National Weather Service in Spokane, morning frost will persist until at least Thursday as overnight lows remain near freezing. Daytime highs, however, will rebound quickly into the upper 50s and around 60 degrees under full sunshine. Residents in lower-lying and rural areas, including Cheney, Deer Park, and the West Plains, may see frost form earlier and linger longer near sunrise.
Calm winds and low humidity will enhance radiational cooling, keeping conditions crisp but stable. Gardeners and homeowners should protect sensitive plants, drain hoses, and bring pets indoors overnight. Motorists may encounter light windshield frost before 9 a.m., particularly on shaded streets and bridge decks.
By Friday, a gradual warming trend begins, with afternoon highs near 60 degrees and mild sunshine continuing into the weekend. According to forecasters, the next chance of rain won’t arrive until late Saturday or Sunday, when a Pacific system could return light showers to the Spokane area.
The region’s early taste of fall frost signals the seasonal shift toward cooler, longer nights across eastern Washington and the Columbia Basin.
Five-Day Forecast for Spokane, WA:
Tue: 58/32 – Frost early; sunny and mild afternoon.
Wed: 60/32 – Clear and calm; widespread morning frost.
Thu: 60/35 – Frost early; bright sunshine.
Fri: 60/35 – Mostly sunny; pleasant fall day.
Sat: 60/43 – Clouds increasing; chance of rain late.
