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Mountain showers likely, but sunshine in the valley with mild temperatures

The daily forecast from Idaho's largest, most experienced team of meteorologists.

BOISE, Idaho —

A beautiful stretch of weather is ahead for much of Idaho. However, there are still some chances of mountain showers throughout the weekend. This activity is fueled by a low pressure system that is centered in southeastern Idaho. It's bringing moisture back into the central mountain area this afternoon and evening. We look to see a similar pattern tomorrow, but with less moisture. Today and tomorrow expect to see mainly showery activity with some isolated stronger thunderstorms in these areas; mainly in the afternoon and evening hours.

Mostly sunny skies for many Treasure Valley locations today.  Morning lows dipped to the mid to upper 40's, close to normal for the end of September, and afternoon highs reached the low 70's, with breezy northwest winds.  

Saturday looks to be very similar to Friday for valley locations; the main difference on Saturday will be the decreasing winds.

Heading into the weekend and the month of October, look for mostly sunny days and clear nights through next week.  Morning lows will be cool in the upper 40's to low 50's in the Treasure Valley, with afternoon highs in the low to mid 70's on Saturday in Boise, the mid to upper 70's on Sunday, and near 80 degrees through next week.

By the way, September in Boise turned out to be the warmest on record, with an average temperature of 71.6°, which is a full 5.1° above average.  But it was a drier-than-average month, with only 24-hundredths of an inch of rain, which is 17-hundredths of an inch below normal.

Read more:  Triple-digit temperatures: normal or not for September?

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ALSO: Ada County Highway District traffic map and live cameras

KTVB Weather Team

  • Idaho's Chief Meteorologist Rick Lantz began his broadcasting career in 1975 working in both radio and television in Weiser, Caldwell, Nampa, and Boise. He has been bringing you the weather each weeknight for nearly 40 years on KTVB.
  • Meteorologist Bri Eggers joined the KTVB weather team in the fall of 2018. She became a meteorologist while working here in the Treasure Valley, and has earned her National Weather Association seal of approval. After spending four years in Boston, forecasting blizzards, nor’easters and humid summer days, Bri is excited to dive back into mountain meteorology. 
  • Meteorologist Jim Duthie has been a part of KTVB's weather team since August of 2008, but it's not his first experience with Idaho weather. Jim began forecasting on television in the Treasure Valley in 1998. Prior to coming to Idaho, he had extensive weather forecasting experience both in the private sector and in broadcasting.
  • Meteorologist Larry Gebert sadly passed away in April 2022.

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