Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Flash Flood Watch until August 18, 12:00 AM MDT

Current conditions at

Ontario Municipal Airport (KONO)

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

thunder

74°F

23°C

Humidity	48%
Wind Speed	SW 5 MPH
Barometer	29.99 in (1015.58 mb)
Dewpoint	53°F (12°C)
Visibility	8.00 mi
Last update	16 Aug 09:38 PM MDT

More Information:

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

Extended Forecast for

4 Miles WSW Ontario Municipal OR

Flash Flood Watch August 16, 09:55pm until August 18, 12:00am

Click here for hazard details and duration

Flash Flood Watch

Flash Flood Watch August 16, 09:55pm until August 18, 12:00am
NOW until 12:00am Mon
Flash Flood Watch
Tonight
Low: 66 °F
Scattered
Showers then
Mostly Cloudy
Sunday
High: 89 °F
Mostly Cloudy
then Slight
Chance
T-storms
Sunday Night
Low: 64 °F
Chance
T-storms then
Partly Cloudy
Monday
High: 94 °F
Hot
Monday Night
Low: 65 °F
Mostly Clear
Tuesday
High: 97 °F
Hot
Tuesday Night
Low: 66 °F
Mostly Clear
Wednesday
High: 95 °F
Hot

Detailed Forecast

Tonight

Scattered showers and thunderstorms before midnight. Mostly cloudy, with a low around 66. Northwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

Sunday

A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 89. West wind 3 to 6 mph.

Sunday Night

A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64. West northwest wind 3 to 5 mph.

Monday

Sunny and hot, with a high near 94. West northwest wind around 5 mph becoming calm in the morning.

Monday Night

Mostly clear, with a low around 65. West wind 5 to 7 mph becoming north in the evening.

Tuesday

Sunny and hot, with a high near 97.

Tuesday Night

Mostly clear, with a low around 66.