Halloween Weather Forecast: Snow, Rain, and Chilling Temperatures

After a few days of clear skies and chilly mornings, Portland is expected to experience back-to-back rainstorms starting Wednesday, with an atmospheric river bringing significant rain to the area by Thursday. The National Weather Service predicts a second atmospheric river on Friday night or Saturday, with each storm expected to drop at least an inch of rain across the Willamette Valley. The forecast indicates a weather change with stormy conditions through the weekend, potentially resulting in over 3 inches of rain in Portland by Monday. The arrival of rain should also bring warmer nights after multiple freezing temperatures.