Ontario, Oregon Weather Conditions

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Current Conditions

  • 51°
  • Scattered Clouds
  • Wind: WNW 9 mph
  • Humidity: 48%
  • Visibility: 10.0 miles
  • Dew Point: 32°
  • Pressure: 30.01 in. +

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Next 12 Hours

9  am
12  pm
3  pm
6  pm
9  pm
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
50°
57°
59°
64°
52°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Partly Cloudy
  • High: 66 °
  • Low: 34 °
  • Partly Cloudy
  • Saturday
  • Clear
  • High: 77 °
  • Low: 43 °
  • Clear
  • Sunday
  • Clear
  • High: 66 °
  • Low: 43 °
  • Clear
  • Monday
  • Mostly Cloudy
  • High: 79 °
  • Low: 46 °
  • Mostly Cloudy
  • Tuesday
  • Chance of Rain
  • High: 61 °
  • Low: 39 °
  • Chance of Rain

Forecast for Ontario, Oregon

Updated: 9:00 AM MDT on April 18, 2014

  • Friday

    Partly cloudy in the morning, then clear. High of 66F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy in the evening, then clear. Low of 34F. Winds less than 5 mph.

  • Saturday

    Clear in the morning, then partly cloudy. High of 77F. Winds from the East at 5 to 10 mph shifting to the South in the afternoon.

  • Saturday Night

    Partly cloudy in the evening, then clear. Low of 43F. Winds from the WNW at 5 to 15 mph.

  • Sunday

    Clear. High of 66F. Winds from the WNW at 5 to 10 mph shifting to the North in the afternoon.

  • Sunday Night

    Partly cloudy in the evening, then clear. Low of 43F. Winds from the ENE at 5 to 10 mph.

  • Monday

    Mostly cloudy. High of 79F. Winds from the East at 5 to 15 mph.

  • Monday Night

    Mostly cloudy. Low of 46F. Winds from the SSE at 5 to 15 mph.

  • Tuesday

    Overcast with a chance of rain. High of 61F. Winds from the SE at 5 to 15 mph. Chance of rain 50%.

  • Tuesday Night

    Mostly cloudy with a chance of rain. Low of 39F. Breezy. Winds from the WSW at 10 to 20 mph. Chance of rain 40%.

  • Wednesday

    Partly cloudy. High of 57F. Winds from the WNW at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy. Low of 36F. Winds from the NW at 5 to 15 mph.

  • Thursday

    Clear. High of 63F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 41F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 66F. Winds from the ESE at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 45F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. High of 66F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy with a chance of rain. Low of 45F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday

    Partly cloudy. High of 64F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy with a chance of rain. Low of 45F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Mostly cloudy. High of 66F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 45F. Winds from the NW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Iowa Ave and Highway 52, Payette, ID

Updated: 9:26 AM MDT

Temperature: 53.4 °F Dew Point: 36 °F Humidity: 51% Wind: SSW at 2.2 mph Pressure: 29.64 in Hourly Precipitation: - Windchill: - Graphs

Location: Payette Foothills, Payette, ID

Updated: 9:38 AM MDT

Temperature: 53.6 °F Dew Point: 11 °F Humidity: 18% Wind: Calm Pressure: 20.08 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: ITD I-84/US-95 Interchange ID US, Fruitland, ID

Updated: 8:45 AM MDT

Temperature: 51 °F Dew Point: 34 °F Humidity: 50% Wind: West at 10 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest WOOD ID US UPR, Payette, ID

Updated: 7:00 AM MDT

Temperature: 45 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: NE 25th/Payette Heights Rd., Payette, ID

Updated: 9:38 AM MDT

Temperature: 51.3 °F Dew Point: 36 °F Humidity: 55% Wind: SSE at 1.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest NYSSA OR US UPR, Fruitland, ID

Updated: 6:05 AM MDT

Temperature: 45 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: RAWS ALKALI FLAT OR US, Vale, OR

Updated: 7:09 AM MDT

Temperature: 46 °F Dew Point: 34 °F Humidity: 62% Wind: SSW at 1 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: ITD Black Canyon ID US, New Plymouth, ID

Updated: 8:44 AM MDT

Temperature: 51 °F Dew Point: - Humidity: - Wind: West at 15 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest Rye Valley(I-84 MP 340.4) OR US ODOT, Huntington, OR

Updated: 6:15 AM PDT

Temperature: 49 °F Dew Point: 40 °F Humidity: 72% Wind: North at 10 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Owyhee Junction, Nyssa, OR

Updated: 9:35 AM MDT

Temperature: 53.7 °F Dew Point: 36 °F Humidity: 52% Wind: WNW at 17.0 mph Pressure: 29.94 in Hourly Precipitation: - Windchill: - Graphs

Location: HADS BULLY CREEK RESERVOIR NEAR VALE OR US USBR, Vale, OR

Updated: 6:45 AM MDT

Temperature: 46 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Boise Idaho 
322 am MDT Friday Apr 18 2014 


Short term...today through Saturday...surface low and cold front 
have moved to southeast Idaho as of 3 am. Showers are shifting east as 
well with light rain showers across the Magic Valley at 3 am. No 
thunderstorms observed since midnight our County warning forecast area. Dry slot on water 
vapor imagery over Washington and west Oregon will over spread SW Idaho and 
southeast Oregon later this morning and south central Idaho this 
afternoon. One change this cycle is the moisture with the low to 
our south. Moisture remains over Nevada then lifts north to the Idaho-Nevada 
border Saturday afternoon...where a surface low also forms. Warm 
SW flow will bring temperatures back up into the 70s which may 
provided enough instability to combine with the moisture for a 
slight chance of thunderstorms late Saturday over highest terrain. 


Long term...Saturday night through Friday...a dry cold front will 
sweep east across eastern Oregon/western Idaho late Saturday night. 
Main effect will be gusty winds early Sunday morning and 
temperatures 5 to 7 degrees cooler by Sunday afternoon. Weather 
pattern will shift on Monday as the upper level ridge rebuilds over 
the Continental Divide...leaving Oregon/Idaho under the influence of 
southwesterly flow aloft on the backside of the ridge. Middle-level 
moisture will be advected northeastward in this set-up...supporting 
the development of showers and thunderstorms as early as Monday 
afternoon. Significantly cooler Tuesday...Wednesday...and Thursday 
as a deep upper level trough moves inland over the western Continental U.S.. 
expect valleys to peak in the middle to upper 50s. Trough looks to exit 
by next weekend...but model agreement wavers significantly by 
Friday. 


&& 


Aviation...cold front exited toward eastern Idaho approximately 09z 
this morning. Scattered MVFR showers and moderate Post-frontal 
winds /W-northwest with gusts to 25 kts/ will continue across southwest 
Idaho through 15z. Snow levels at or above 6000 feet mean sea level. Across southeast Oregon - 
patchy IFR fog and surface winds generally 10 kts or less. Westerly 
winds aloft will average 30 knots at 10k feet mean sea level. 


Weekend outlook...VFR. A dry cold front will move east across Oregon/Idaho 
late Saturday night. Expect gusty winds through 18z Sunday. 


&& 


Boi watches/warnings/advisories... 
Idaho...none. 
Or...none. 


&& 


$$ 


Weather.Gov/Boise 


Short term...vm 
long term....Mt 
aviation.....Mt 






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