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Storm chances increase into Saturday ahead of triple-digit heat next week

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The Summer heat is on this Friday, with parts of the Treasure Valley expected to reach near the triple-digit range. The final days of spring bring showers to Idaho, but hot temperatures stick around this coming week.

After warm temperatures today, this weekend sees a slight cool down with 80s moving in due to southern thunderstorm activity coming in around the afternoon hours. Red Flag Warnings start at 6 P.M. for most of southern Idaho and last until 6 P.M. tomorrow. This means there will be an uptick in wind, dry weather, and warm conditions, all aiding any wildfire activity that could start due to lightning strikes.

Make sure to check into Idaho News 6 over the weekend, as our team will have some heightened awareness of wildfires over the next 24 hours. There are no promises of any fires getting started, but these are the conditions that could easily see a fast-growing wildfire start in range lands.

Find out when the summer heat arrives—

Isaiah Sharp's Idaho News 6 Forecast- 6/19/26

After thunderstorm activity subsides on Saturday, Sunday ushers in the first day of summer, and the temperatures got the message this week. Triple digits could move in around the middle of the week, with Boise forecasted to hit 99°.

Temperatures stick around the upper 90s for most of this week, so its a good reminder this time of year to stay hydrated, wear skin protection, and stick to the shade as much as possible if you are outside for extended periods of time.

Enjoy the cooler weekend that's ahead. Spring is almost over, and the summer heat will be here soon!