Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from August 20, 12:00 PM MDT until August 21, 09:00 PM MDT

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424°NLon: 117.00808°WElev: 2185.0ft.

Clear

68°F

20°C

Humidity	42%
Wind Speed	N 0 MPH
Barometer	29.91 in (1012.87 mb)
Dewpoint	45°F (7°C)
Visibility	10.00 mi
Last update	20 Aug 01:20 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Weiser ID

Heat Advisory August 20, 12:00pm until August 21, 09:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 64 °F
Mostly Clear
Thursday
High: 101 °F
Hot
Thursday Night
Low: 66 °F
Mostly Cloudy
then Patchy
Smoke
Friday
High: 103 °F
Patchy Smoke
Friday Night
Low: 68 °F
Mostly Cloudy
then Slight
Chance
T-storms
Saturday
High: 98 °F
Slight Chance
T-storms then
Partly Sunny
Saturday Night
Low: 63 °F
Slight Chance
T-storms then
Partly Cloudy
Sunday
High: 92 °F
Hot
Sunday Night
Low: 60 °F
Mostly Clear

Detailed Forecast

Overnight

Mostly clear, with a low around 64. Calm wind.

Thursday

Mostly sunny and hot, with a high near 101. Calm wind becoming south around 5 mph in the afternoon.

Thursday Night

Patchy smoke before 3am, then patchy smoke after 4am. Mostly cloudy, with a low around 66. Calm wind becoming north northeast around 5 mph.

Friday

Patchy smoke before 1pm. Increasing clouds and hot, with a high near 103. North wind around 6 mph becoming calm in the morning.

Friday Night

A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 68. West wind 5 to 7 mph becoming north northeast after midnight.

Saturday

A 20 percent chance of showers and thunderstorms before noon. Partly sunny and hot, with a high near 98.

Saturday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 63.

Sunday

Sunny and hot, with a high near 92.

Sunday Night

Mostly clear, with a low around 60.

Monday

Mostly sunny and hot, with a high near 94.

Monday Night

Partly cloudy, with a low around 62.