National Weather Service United States Department of Commerce

A stalled frontal boundary and ample monsoonal moisture will lead to flash flood potential from the Great Basin to the Great Plains tonight and Tuesday

A stalled frontal boundary will set up along the southern and central Rockies for the next couple of days providing focus for showers and thunderstorms. In addition, ample monsoonal moisture will stream in across the southwest bringing enough moisture to introduce a flash flood threat from the Great Basin and Southwest eastward across the central and southern Rockies into the adjacent Plains.
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Current Conditions

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3 Miles S Ontario Municipal OR

7 Day Forecast

For More Weather Information:

Boise, ID Local Forecast Office

Today

Hot

Hot

High: 97 °F

Tonight

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

Low: 70 °F

Wednesday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 93 °F

Wednesday
Night

Mostly Clear

Mostly
Clear

Low: 67 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 96 °F

Thursday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 67 °F

Friday

Hot

Hot

High: 96 °F

Friday
Night

Mostly Clear

Mostly
Clear

Low: 65 °F

Saturday

Hot

Hot

High: 98 °F

Detailed Forecast

  • Today Sunny and hot, with a high near 97. Calm wind becoming north northwest around 6 mph in the afternoon.
  • Tonight Isolated showers and thunderstorms before midnight. Partly cloudy, with a low around 70. Northwest wind 7 to 9 mph. Chance of precipitation is 20%.
  • Wednesday A 20 percent chance of showers and thunderstorms after noon. Partly sunny and hot, with a high near 93. West southwest wind around 5 mph becoming calm in the morning.
  • Wednesday Night Mostly clear, with a low around 67. Northwest wind around 6 mph.
  • Thursday A 20 percent chance of showers and thunderstorms after noon. Sunny and hot, with a high near 96. North wind around 5 mph.
  • Thursday Night A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 67.
  • Friday Sunny and hot, with a high near 96.
  • Friday Night Mostly clear, with a low around 65.
  • Saturday Sunny and hot, with a high near 98.
  • Saturday Night Mostly clear, with a low around 67.
  • Sunday Mostly sunny and hot, with a high near 97.
  • Sunday Night Partly cloudy, with a low around 67.
  • Monday Mostly sunny and hot, with a high near 95.