BOISE, Idaho — Another cold front rolled across the Gem State late Monday into early Tuesday, triggering valley rain showers and continued light mountain snow. There isn't much moisture coming in behind the front, so just some isolated showers are possible during the day today, but a cold wind will quickly become the big weather headline for Tuesday as our surface pressure gradient tightens up behind the front. In the Treasure Valley, westerly winds could gust up to 45mph by this afternoon, and in the Magic Valley, a WIND ADVISORY is in effect from 12-9pm today for gusts up to 50mph, which can be damaging.
The cool air filtering in behind the front will lead to our chilliest day of the week, with temperatures climbing only into the mid-50s in the Treasure Valley, a good 15° cooler than normal for early May. A few lingering showers are possible throughout the day today, and even on Wednesday some occasional mountain snow showers are possible as we get some wraparound moisture from the western edge of a broad low-pressure system to our east.
Come Thursday, we kick off a welcome warming trend as a strong ridge of high pressure starts amplifying in from the west. This ridge will bring sunshine and unseasonably warm weather to the region, with portions of British Columbia and the Pacific Northwest possibly seeing record-setting warmth by this weekend. In SW Idaho, temperatures will skyrocket into the mid-70s by Friday and then into the 80s over Mother's Day weekend! This warmth is more typical of mid-June than mid-May and will be picture-perfect for any outdoor brunch or dinner plans that you're planning for Mom on Sunday.
And, good news for gardeners, it looks like the threat of frost could be gone after Wednesday, as morning lows by this weekend will warm into the 50s in Boise and should stay well above freezing long-term.
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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 40 years on KTVB.
- Meteorologist Sophia Bliss has been a part of the KTVB team since December of 2019. She started producing for the Wake Up Idaho team and continues to work as a producer. Additionally, Sophia is a meteorologist. She writes special weather stories and forecasts as a member of the First Alert Weather team. She loves the science of weather and enjoys the opportunity to explain how “magic” of the science works.
- Meteorologist Rachel Garceau joined KTVB’s First Alert Weather team as a broadcast meteorologist in May of 2023. While Rachel started her news career behind the scenes as a producer, she eventually moved in front of the camera as a news anchor and fill-in weather anchor. After spending some time on the green screen, Rachel realized she had a passion for the “why” behind the weather, and especially for the challenges presented by forecasting Idaho’s four distinct seasons. You can catch her forecasts every weekday morning from 5-7am on Wake Up Idaho.
- Weather Anchor Hector Mendoza joined KTVB in June of 2023 as a Multi Skilled Journalist and became a member of the First Alert Weather team shortly thereafter, in July of 2023. Hector started off as the weather anchor for KTVB's Saturday Morning News but rang in 2024 by also taking over weather duties for the News at Noon. Whether planning for the week ahead or just wondering what's in store for the weekend, Hector is excited to help keep Idahoans informed about the conditions that matter most to them. You can catch him on Saturday mornings from 8-10am and on the News at Noon Tuesday through Friday.
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