Tracking another round of rain and snow to start the week and cold conditions

A cold, unsettled stretch of weather continues across Eastern Idaho and Western Wyoming, with another surge of moisture moving through the I-15 corridor. A Frost Advisory remains in effect until 9 a.m. this morning, while a Flood Watch continues for areas vulnerable to rising water and runoff. With temperatures struggling to reach the 50s today, periods of rain, chilly conditions and reduced visibility will make for a damp start to the week.

Today: Chilly, Wet and Potentially Hazardous

Expect a cold start across the Snake River Plain, including Idaho Falls, Blackfoot, Pocatello and surrounding communities. Morning temperatures will be near freezing in some locations, so sensitive plants, garden vegetation and outdoor potted plants may need protection before the Frost Advisory expires at 9 a.m.

The next surge of moisture is pushing through the region, bringing additional opportunities for rain along the I-15 corridor and into surrounding valleys. Afternoon temperatures will struggle to climb out of the 40s and reach the lower 50s in warmer locations. Southwest winds of 5 to 10 mph will add to the chill, especially in exposed areas.

The biggest concern today is the combination of wet roads, poor visibility and localized flooding. Heavy or persistent rain can overwhelm storm drains, fill low-lying areas and create water over roadways. Check storm drains near your home, keep an eye on drainage ditches and avoid driving through standing water. Allow extra time for the commute and increase following distance on slick pavement.

Tuesday and Wednesday: More Moisture and Cool Conditions

The unsettled pattern continues into midweek as another push of moisture keeps rain chances in the forecast. Temperatures will remain below seasonal comfort levels, with daytime highs generally in the 40s to lower 50s and overnight lows dipping into the 30s and 40s, depending on elevation, cloud cover and local conditions.

The higher elevations and mountain communities will remain colder, with a chance of snow or a rain-and-snow mix where temperatures are low enough. Travelers heading toward Island Park, Driggs, Teton Valley, mountain passes and western Wyoming should be prepared for changing road conditions.

With additional precipitation possible while the Flood Watch remains in effect, watch for water collecting along roads, in low spots and near streams or drainage channels. Even when rainfall eases temporarily, runoff can continue to cause problems.

For everyday plans, keep the rain jacket handy, wear layers and give yourself extra time for school drop-offs, errands and the morning commute. Outdoor work and recreation may require some flexibility through the middle of the week.

Thursday and Friday: Gradual Improvement

The weather pattern should begin to improve toward the end of the week as moisture moves out and conditions trend drier. Temperatures are expected to recover, with highs climbing toward the 50s and potentially reaching the 60s by late week, depending on how quickly clouds clear and sunshine returns.

Mornings will still be chilly, with temperatures in the 30s and 40s. Keep a jacket nearby for early starts, but milder afternoons should make it more comfortable to get outside, tackle yardwork and enjoy a break from the wet weather.

As the rain tapers off, continue to use caution around areas that have experienced high water or poor drainage. Water may linger in low spots even after the skies begin to clear.

Halloween Weekend: Better Weather for Hayrides and Haunted Attractions

The outlook is more encouraging heading into the weekend, with drier weather expected to return and temperatures trending milder. That could mean better conditions for Halloween hayrides, pumpkin patches, haunted attractions, corn mazes and other fall activities around Eastern Idaho and Western Wyoming.

If you're planning an outdoor Halloween event, the milder afternoon temperatures should help, but don't forget how quickly conditions change after sunset. Overnight temperatures in the 30s and 40s will make evenings feel considerably colder than the daytime forecast.

Dress in layers, bring a warm coat for hayrides and outdoor events, and consider gloves and a hat for children spending extended periods outside. Check local event updates before leaving home, particularly if recent rain has left fields, trails or unpaved parking areas muddy.

What You Need to Know

• Frost: The Frost Advisory remains in effect until 9 a.m. Protect sensitive plants while temperatures are near freezing.
• Flooding: The Flood Watch remains in effect. Monitor local alerts, check storm drains and avoid flooded roadways.
• Roads: Rain, slick pavement and reduced visibility will affect travel, especially along the I-15 corridor and in low-lying areas.
• Temperatures: Highs will struggle to reach the 50s today, with overnight temperatures in the 30s and 40s. A gradual warmup should bring readings toward the 60s by late week.
• Weekend plans: Drier conditions are expected to develop in time for many Halloween activities, but evenings will remain chilly.

Stay with Local News 8 as we track the next surge of moisture, monitor the potential for localized flooding and watch for the return of drier, milder weather heading into Halloween weekend.