PORTLAND, Ore. (KOIN) — As we kick off the new week, an upper-level trough of low pressure will bring about cooler temperatures and showery moments to the region come Monday and Tuesday.

Alongside scattered showers, the forecast also calls for a threat of an isolated thunderstorm with the potential of lightning, gusty winds, and heavy downpours. Thunderstorms are expected to be non-severe. The potential stretches from the Willamette Valley to east of the Cascades across the early parts of the week.

For Monday, expect a mainly dry start with a few scattered showers arriving up the I-5 corridor as we head into the evening. On Tuesday, showers may pick up across the morning hours and linger into midday throughout the valley.

Daytime highs over the next few days will sit slightly below-norm

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