KTVB file

BOISE - If you thought yesterday was warm, temperatures are going to get downright hot this weekend.

The First Alert Weather team is forecasting near-record high temperatures through the weekend across the Treasure Valley - with a high of 95 expected Saturday.

The hot weather will persist through at least Tuesday - a break is expected Wednesday, when a more seasonal 71 degrees is forecast.

The Boise River is running fast and high after the Bureau of Reclamation cranked up the flow out of Lucky Peak Dam - sending torrents of cold water down river.

The river will be running between 5,000 and 5,500 cubic feet per second as measure at the Glenwood Bridge - that's below flood stage of 7,000 cfs - but problems are still possible.

Lucky Peak Reservoir is sitting just 9 percent below its capacity -- meaning water managers need to make room for all the snow left in the mountains.

Water is expected to start creeping onto portions of the Greenbelt path, which could force detours for runners and walkers.

If you're thinking about hitting the river in a float tube - you might want to think again. Tubes are not yet being rented at Barber Park and officials warn the river could be dangerous.

Hydrologists warn parents to keep kids away from even the river's edge.

"Young kids walking along the bank to maybe look at the spectacle of high water, we don't want them to fall in because the bank could be unstable in spots," said Jay Breidenbach, senior hydrologist with the National Weather Service.

Even wading in that cold water could cause you trouble.

"You get muscle tired, so you're not as strong as you were when you first went into the water," said Greg Tryon, spokesperson for a Seattle-area fire and rescue crew. "Then the cold starts affecting your brain, so you don't realize you're in trouble."

With Boise City Pools closed and the river mostly off limits there is an option. Roaring Springs Waterpark will open its gates for the first time this season on Saturday. Several new attractions will be offered, including cabanas and a new kid's slide.

It's not the cold water -- but the hot weather that has the National Weather Service concerned.

They are advising people to refresh their memories on basic hot weather tips:

- When the weather warms up, be sure to slow down

- Drink plenty of water

- Wear lightweight and light colored clothing

- Protect yourself from sunburn by wearing sunscreen and a hat

The elderly and the very young are the most likely groups to experience adverse health effects from the heat.

-NewsChannel 7's Scott Evans, the Associated Press & KING5.com contributed to this report.