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Summer is heating up, with 100°+ likely Monday

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

BOISE, Idaho — A perfect mountain get-away weekend is shaping up with sunny, dry weather. Before last weekend, Boise had recorded precipitation during every weekend for the past 7 weekends!  That takes us all the way back to April!  So, this may be the weekend we've all been waiting for -- feeling, and looking like a summer weekend should.

Look for valley highs in the mid to upper 80's today, with light wind out of the NW.  The high in Boise is expected to be 87°, which is just a few degrees above seasonal averages.  Sunny skies prevail through the weekend and into next week.

Highs on Sunday will be even hotter; into the mid and upper 90's.  As high pressure continues to build in, and our southwest flow aloft amplifies, the heat will intensify.  Overnight lows Sunday into Monday morning will be in the mid and upper 60's -- not cooling off much, and not for very long.  Highs on Monday will be into the triple-digits for the Treasure Valley, with a forecast high for Boise of 101°.  Typically, Boise would see the first 100°+ day around the first week of July.  Last year, it was 103° on June 3rd!

Temperatures will back off to the mid 90's Tuesday and closer to normal, in the upper 80's to low 90's through the middle of next week.  It may get a little breezy Tuesday evening and Wednesday.  Sunshine and dry conditions are expected to continue through the extended period.

 IMPORTANT NOTE:  Area streams, rivers and canals are running high, fast and cold. They may be enticing with the higher temperatures, but they are dangerous.

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  • 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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