Ontario, Oregon Weather Conditions

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Current Conditions

  • 78°
  • Clear
  • Wind: SSE 10 mph
  • Humidity: 43%
  • Visibility: 10.0 miles
  • Dew Point: 54°
  • Pressure: 29.95 in. -

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Next 12 Hours

3  pm
6  pm
9  pm
12  am
3  am
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
84°
86°
72°
64°
63°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Mostly Cloudy
  • High: 86 °
  • Low: 57 °
  • Mostly Cloudy
  • Wednesday
  • Clear
  • High: 90 °
  • Low: 55 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 81 °
  • Low: 50 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 79 °
  • Low: 55 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 73 °
  • Low: 52 °
  • Partly Cloudy

Forecast for Ontario, Oregon

Updated: 3:00 PM MDT on September 23, 2014

  • Tuesday

    Mostly cloudy. High of 86F. Winds from the ESE at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy. Low of 57F. Winds from the SSW at 5 to 10 mph.

  • Wednesday

    Clear. High of 90F. Winds from the SSE at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 55F. Winds from the WSW at 5 to 15 mph.

  • Thursday

    Clear in the morning, then partly cloudy. High of 81F. Winds from the NW at 5 to 10 mph shifting to the SW in the afternoon.

  • Thursday Night

    Partly cloudy. Low of 50F. Winds from the North at 5 to 15 mph.

  • Friday

    Partly cloudy. High of 79F. Winds from the NW at 5 to 10 mph.

  • Friday Night

    Partly cloudy with a chance of rain after midnight. Low of 55F. Winds from the NW at 5 to 15 mph. Chance of rain 30%.

  • Saturday

    Overcast with a chance of rain in the morning, then partly cloudy. High of 73F. Winds from the NW at 5 to 10 mph.

  • Saturday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 52F. Winds from the SSW at 5 to 10 mph shifting to the NNW after midnight. Chance of rain 60% with rainfall amounts near 0.5 in. possible.

  • Sunday

    Mostly cloudy. High of 61F. Winds from the WNW at 5 to 10 mph.

  • Sunday Night

    Partly cloudy with a chance of rain. Low of 50F. Winds from the West at 5 to 10 mph. Chance of rain 20%.

  • Monday

    Partly cloudy. High of 73F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 48F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 79F. Winds from the NW at 5 to 10 mph.

  • Tuesday Night

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

  • Wednesday

    Clear. High of 70F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 45F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 72F. Winds less than 5 mph.

  • Thursday Night

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

  • Friday

    Partly cloudy. High of 73F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 46F. Winds less than 5 mph.

  • Saturday

    Clear. High of 72F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 46F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Iowa Ave and Highway 52, Payette, ID

Updated: 2:15 PM MDT

Temperature: 80.8 °F Dew Point: 56 °F Humidity: 43% Wind: ESE at 3.7 mph Pressure: 29.54 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: Payette Foothills, Payette, ID

Updated: 2:21 PM MDT

Temperature: 83.1 °F Dew Point: 29 °F Humidity: 14% Wind: South at 3.2 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

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

Updated: 1:15 PM MDT

Temperature: 76 °F Dew Point: 57 °F Humidity: 52% Wind: SSE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

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

Updated: 2:21 PM MDT

Temperature: 79.2 °F Dew Point: 57 °F Humidity: 46% Wind: SW at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: MesoWest NYSSA OR US UPR, Fruitland, ID

Updated: 12:00 PM MDT

Temperature: 68 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Parma - Outdoor Range, Parma, ID

Updated: 2:21 PM MDT

Temperature: 76.5 °F Dew Point: 56 °F Humidity: 50% Wind: SW at 2.9 mph Pressure: 27.39 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

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

Updated: 1:14 PM MDT

Temperature: 74 °F Dew Point: - Humidity: - Wind: SE at 7 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Owyhee Junction, Nyssa, OR

Updated: 2:12 PM MDT

Temperature: 75.1 °F Dew Point: 61 °F Humidity: 62% Wind: Calm Pressure: 29.82 in Hourly Precipitation: - Heat Index: 77 °F Graphs

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

Updated: 12:45 PM MDT

Temperature: 74 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Mann Creek, Weiser, ID

Updated: 2:16 PM MDT

Temperature: 79.3 °F Dew Point: 57 °F Humidity: 47% Wind: SSE at 4.2 mph Pressure: 29.94 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: RAWS CATFISH ID US, Huntington, OR

Updated: 11:52 AM PDT

Temperature: 69 °F Dew Point: 54 °F Humidity: 59% Wind: ESE at 13 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Boise Idaho 
939 am MDT Tuesday Sep 23 2014 


Discussion...a moist southwest flow aloft this morning will start 
to dry out in the lower levels this afternoon. Currently... 
dewpoints are rather high...in the 40s and 50s...with considerable 
cloudiness across the region. There is enough moisture for 
convection today...but daytime heating will be limited due to the 
clouds...and warming aloft with stabilize the atmosphere for most 
areas. However...radar was still showing isolated showers in the 
far north and will linger through the afternoon across the higher 
terrain of Baker County and in the Boise/west central mountains. 
Instability is marginal but enough to continue isolated 
thunderstorms in the Boise/west central mountains this afternoon. 
Forecast will be updated for lower probability of precipitation today...and will remove 
the low probability of precipitation in the Boise/west central mountains this evening. 


&& 


Aviation...VFR. Isolated low-VFR showers and thunderstorms 
/after 18z/ across the central Idaho mountains and high terrain 
near kbke. Scattered-to-broken middle level clouds elsewhere. 
Southeast-to-SW surface winds will average 5 to 15 knots...with gusts to 
25 kts across eastern Oregon this afternoon. Southwesterly winds 
aloft will average 20 kts at 10k feet mean sea level. 


&& 


Previous discussion... 
short term...today through Wednesday...decaying cold front 
brought a lone thunderstorm across Canyon County where a strike 
was detected near Marsing around 210 am. Other storms from 11 PM 
to 2 am were mainly across Malheur and Baker counties. As of 3 am 
showers had lifted to the NE...across Adams County...between 
Emmett to over Eagle...and approaching Donnelly. The upper levels 
will provide enough lift to keep isolated to scattered showers 
going across the west central mountains and possibly Baker County 
through this evening while drying southeast to SW low layer flow bring in 
warming high temperatures through Wednesday. Lows tonight will be 
influenced by decreasing clouds but more wind for a little cooler 
mins across the east Oregon High Desert through the Weiser basin and 
lower Treasure valley...but milder lows across the rest of SW 
Idaho. Main change this package was for current radar and Sat 
trends which was for higher probability of precipitation and more cloudiness through this 
evening. 


Long term...Wednesday night through Tuesday...a pattern change to 
to Fall like weather begins late Thursday as an upper trough moves 
into the intermountain west. Models continue to struggle with the 
evolution of this pattern particularly over the weekend leading to 
poor run to run consistency though the current 00z runs are in good 
agreement with the overall features. The area remains dry through 
Thursday as the trough and cold front weaken significantly Thursday 
night. The trough splits along the West Coast which slows the 
eastward progression of the front and associated moisture to southeast 
Oregon Thursday night. Both models are in good agreement with a 
closed low pressure system forming over northern California Friday night and 
moving east across Nevada Saturday and Sunday. The speed of the low 
varies quite a bit between the faster 00z GFS and slower 00z European model (ecmwf) 
which will be more of a factor with how much precipitation the area 
receives Saturday and Sunday. Either way the weekend will be cooler 
/about 10 degrees below normal/ and wet across the area. Have 
increased probability of precipitation for the weekend. A large upper trough remains over 
the western U.S. Through early next week for northwesterly flow 
which will continue the below normal temperatures. 


&& 


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


&& 


$$ 


Weather.Gov/Boise 


Discussion...bw 
aviation.....Mt 
previous short term...vm 
previous long term....jds 






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