Ontario, Oregon Weather Conditions

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Current Conditions

  • 69°
  • Clear
  • Wind: Calm
  • Humidity: 35%
  • Visibility: 10.0 miles
  • Dew Point: 40°
  • Pressure: 30.15 in. +

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Next 12 Hours

11  pm
2  am
5  am
8  am
11  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
66°
58°
55°
57°
73°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Clear
  • High: 90 °
  • Low: 57 °
  • Clear
  • Thursday
  • Clear
  • High: 97 °
  • Low: 62 °
  • Clear
  • Friday
  • Clear
  • High: 101 °
  • Low: 66 °
  • Clear
  • Saturday
  • Partly Cloudy
  • High: 102 °
  • Low: 67 °
  • Partly Cloudy
  • Sunday
  • Clear
  • High: 103 °
  • Low: 68 °
  • Clear

Forecast for Ontario, Oregon

Updated: 3:01 PM MDT on July 28, 2015

  • Tonight

    Clear. Lows 48 to 55. North winds up to 10 mph in the evening...becoming light after midnight.

  • Wednesday

    Sunny. Highs 85 to 90. Light winds.

  • Wednesday Night

    Clear. Lows 52 to 60. Northwest winds up to 10 mph in the evening...becoming light after midnight.

  • Thursday

    Sunny. Highs 92 to 97. Light winds.

  • Thursday Night

    Clear. Lows 58 to 65. Light winds.

  • Friday

    Sunny. Highs 97 to 102.

  • Friday Night through Sunday Night

    Mostly clear. Lows 62 to 70. Highs 96 to 102.

  • Monday and Monday Night

    Partly cloudy. Highs 94 to 100. Lows 63 to 70.

  • Tuesday

    Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs 93 to 98.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Iowa Ave and Higway 52, Payette, ID

Updated: 10:44 PM MDT

Temperature: 68.4 °F Dew Point: 37 °F Humidity: 31% Wind: Calm Pressure: 29.75 in Hourly Precipitation: - Graphs

Location: Payette Foothills, Payette, ID

Updated: 10:44 PM MDT

Temperature: 57.6 °F Dew Point: 32 °F Humidity: 19% Wind: Calm Pressure: 31.01 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 10:49 PM MDT

Temperature: 57.8 °F Dew Point: 48 °F Humidity: 69% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Graphs

Location: Sunnyside Dairy (2mi S of Weiser), Weiser, ID

Updated: 10:48 PM MDT

Temperature: 61.8 °F Dew Point: 46 °F Humidity: 57% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: Annex, Ontario, OR

Updated: 10:45 PM MDT

Temperature: 65.8 °F Dew Point: 40 °F Humidity: 38% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET, New Plymouth, ID

Updated: 10:05 PM MDT

Temperature: 68 °F Dew Point: 35 °F Humidity: 29% Wind: WNW at 1 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Graphs

Location: Kinsell Drive, Weiser, ID

Updated: 10:46 PM MDT

Temperature: 67.6 °F Dew Point: 44 °F Humidity: 42% Wind: North at - Pressure: 27.70 in Hourly Precipitation: 0.00 in Graphs

Location: Weiser flat, Weiser, ID

Updated: 10:41 PM MDT

Temperature: 62.6 °F Dew Point: 40 °F Humidity: 43% Wind: Calm Pressure: 30.17 in Hourly Precipitation: - Graphs

Location: Monroe Creek Valley, Weiser, ID

Updated: 10:40 PM MDT

Temperature: 65.8 °F Dew Point: 31 °F Humidity: 27% Wind: NW at 3.1 mph Pressure: 30.11 in Hourly Precipitation: - Graphs

Location: Mann Creek, Weiser, ID

Updated: 10:40 PM MDT

Temperature: 59.9 °F Dew Point: 41 °F Humidity: 49% Wind: NNW at 3.7 mph Pressure: 30.09 in Hourly Precipitation: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Boise Idaho 
837 PM MDT Tuesday Jul 28 2015 


Discussion...a very dry air mass has settled into the 
region...resulting in clear skies which will persist through 
Wednesday. Temperatures will be cool to start the day on 
Wednesday...then warm into the 80s during the afternoon. Although 
the temperatures will be warmer than today...highs will be below 
normal. Winds will remain light. 


&& 


Aviation...VFR. Clear skies. Light winds up through 10k feet mean sea level. 


&& 


Previous discussion... 
short term...tonight through Thursday...northwesterly flow 
weakens overnight tonight as the flow becomes zonal on Wednesday. 
Upper level ridge begins to strengthen on Wednesday over The Four 
Corners region which will begin a warming trend through Thursday. 
Temperatures in the middle to upper 80s on Wednesday will reach to 
a few degrees above normal on Thursday. 


Long term...Thursday night through Tuesday...models maintain the 
very warm upper level ridge over the western U.S. Through the long 
term...with temperatures 5 to 10 degrees above normal. Monsoon 
moisture entrained into the ridge circulation is expected to fuel 
isolated thunderstorms starting late Friday in eastern Oregon and 
spreading into Idaho on Sunday. Due to uncertainty we are 
weighting thunderstorm distribution toward climatology. Besides 
eastern Oregon favored areas include the Nevada Idaho border...the 
Magic Valley...and the central Idaho mountains. 


&& 


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


&& 


$$ 


Weather.Gov/Boise 


Discussion...bw 
aviation.....Ka 
previous short term...jds 
previous long term....jt/jc 






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