Rain returns to the region this week

Residents in Fairfield County should prepare for a sudden change in weather this week as the local rainy season begins earlier than expected. The arrival of wet conditions comes with just a few days of notice, reversing a recent dry spell that had many expecting clear skies through the end of October.

Meteorologists at KPTV reported that forecast models updated their predictions rapidly, showing an upper-level low lingering over the region instead of moving offshore. This shift introduces several bursts of cool air from Canada, bringing the first substantial rainfall in weeks. The pattern is described as unusual for how late in the season the change occurred without earlier detection.

The weather system will bring lingering showers rather than a stormy event. Forecasters noted the absence of a strong westerly jet stream, which means wind and heavy flooding rains are unlikely. The rain is expected to be steady but moderate, with total accumulation in western valleys likely remaining under one inch for the week. The showers will persist through Friday and Saturday before conditions change.

Temperatures will drop noticeably with the arrival of the cool air mass. The season of 70-degree and 80-degree days is considered over for this year. Afternoon highs will settle into the 50s and lower 60s. This cooler profile marks a distinct transition from the mild fall weather experienced in previous weeks.

Snow is expected to fall at higher elevations in the Cascade Mountains. The GRAF model indicates significant snow accumulation at or above 6,000 feet, while pass elevations will see very little. Snow levels will bottom out around 3,000 feet during Thursday and Friday mornings. Travelers crossing the mountains on those mornings should expect patchy snow on the passes, while midday and afternoon travel should be clearer.

A brief dry period is forecast for early next week. Weather models show a ridging pattern taking over starting Sunday, October 31. This should provide two to four days of dry weather, offering a break in the precipitation. However, the dry spell is expected to be short-lived as the region heads toward a wetter pattern around November 5.

The shift in weather patterns may be linked to the development of a typical El Niño setup along the West Coast. This configuration tends to bring more energy southward and offshore high pressure over southern Canada. The result is often a mild but wet November. While the current system is not stormy, the overall trend suggests the wet season has started, with only occasional brief dry periods likely through at least March.