Ontario, Oregon Weather Conditions

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Current Conditions

  • 85°
  • Clear
  • Wind: Calm
  • Humidity: 31%
  • Visibility: 10.0 miles
  • Dew Point: 51°
  • Pressure: 30.06 in. -

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Next 12 Hours

12  pm
3  pm
6  pm
9  pm
12  am
Clear
Clear
Clear
Clear
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Partly Cloudy
Partly Cloudy
88°
95°
97°
86°
77°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Thunderstorm
  • High: 99 °
  • Low: 66 °
  • Thunderstorm
  • Thursday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 70 °
  • Chance of a Thunderstorm
  • Friday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 73 °
  • Chance of a Thunderstorm
  • Saturday
  • Clear
  • High: 95 °
  • Low: 68 °
  • Clear
  • Sunday
  • Partly Cloudy
  • High: 95 °
  • Low: 73 °
  • Partly Cloudy

Forecast for Ontario, Oregon

Updated: 9:00 AM MDT on July 30, 2014

  • Wednesday

    Partly cloudy with thunderstorms and rain showers in the morning, then clear. High of 99F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday Night

    Clear with a chance of a thunderstorm and a chance of rain in the evening, then partly cloudy. Low of 66F. Winds from the NNW at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Clear in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 97F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 70F. Winds from the NW at 5 to 10 mph. Chance of rain 20%.

  • Friday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 97F. Winds less than 5 mph. Chance of rain 20%.

  • Friday Night

    Clear with a chance of a thunderstorm and a chance of rain. Low of 73F. Winds from the SSE at 5 to 10 mph.

  • Saturday

    Clear. High of 95F. Winds less than 5 mph.

  • Saturday Night

    Clear with a chance of rain in the evening, then partly cloudy with a chance of a thunderstorm and rain. Low of 68F. Winds from the SSE at 5 to 10 mph shifting to the NNW after midnight. Chance of rain 50%.

  • Sunday

    Partly cloudy in the morning, then clear. High of 95F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 73F. Winds less than 5 mph.

  • Monday

    Clear. High of 93F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 72F. Winds from the SSE at 5 to 10 mph shifting to the North after midnight.

  • Tuesday

    Clear. High of 93F. Winds less than 5 mph.

  • Tuesday Night

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

  • Wednesday

    Clear. High of 99F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 64F. Winds less than 5 mph.

  • Thursday

    Clear. High of 91F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 64F. Winds less than 5 mph.

  • Friday

    Clear. High of 88F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 64F. Winds less than 5 mph.

  • Saturday

    Clear. High of 88F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 64F. Winds from the NW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 1:12 PM MDT

Temperature: 85.4 °F Dew Point: 58 °F Humidity: 39% Wind: West at 1.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: MesoWest NYSSA OR US UPR, Fruitland, ID

Updated: 12:10 PM MDT

Temperature: 79 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Parma - Outdoor Range, Parma, ID

Updated: 1:12 PM MDT

Temperature: 86.0 °F Dew Point: 56 °F Humidity: 36% Wind: ESE at 2.7 mph Pressure: 27.53 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

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

Updated: 11:45 AM MDT

Temperature: 83 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: RAWS CATFISH ID US, Huntington, OR

Updated: 10:52 AM PDT

Temperature: 80 °F Dew Point: 51 °F Humidity: 37% Wind: WNW at 4 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Boise Idaho 
914 am MDT Wednesday Jul 30 2014 


Discussion...not as convectively active today in S-central Idaho 
but Harney County/or may become more active as a weak wave comes in 
from the SW...best seen in west/v imagery. Another wave is prognosticated 
along the same track Thursday. Tropical moisture from Hernan can be 
seen in west/v imagery streaming north-northeast into calif then NE across Nevada 
..well south of our County Warning Area. Part of that moisture may clip Twin Falls 
County late Thursday. Thursday night the Oregon moisture and the 
Twin Falls moisture come into phase and pass northeastward through our County Warning Area. 
Until then no clear-cut areas to forecast thunderstorms. Those that 
occur will be mainly in the mountains with local heavy rain...hail 
..and gusty winds. Shear will remain light and storms will be of 
pulse type. Current forecast looks high on probability of precipitation today in S-central 
Idaho...but not enough to update. Rest of current forecast good. 


&& 


Aviation...VFR. Scattered to broken middle level and high clouds. 
Isolated thunderstorms mainly before 06z. Bases 8k-10k feet above ground level. 
Surface winds...variable 10 kts or less except gusts to 30 kts or 
more near thunderstorms. Winds aloft...north around 10 kts up 
through 10k feet mean sea level. 


&& 


Previous discussion... 
short term...today through Thursday...another round of 
thunderstorms especially over higher terrain is expected today. As 
of 3 am a few radar echoes over West Baker County were creeping 
northward at 5-10 miles per hour...while cloud tops were warming across 
Idaho. High temperatures again are expected in the middle 80s to 
around 100 with little to no change in air mass over the County warning forecast area. 
Storms will be pulse type with most storms much like the one that 
affected Jerome with 40 miles per hour winds and 0.02 inches of precipitation 
around midnight...but some very strong cells may support large 
hail again as was reported in Elmore County late Tuesday. Upper 
level forcing remains minimal with light winds less than 15 miles per hour 
aloft due to an 700 mb-500 mb ridge axis centered near the Oregon-Ida border 
through tonight. This will allow terrain-driven circulations to 
provide broad lift across central Idaho mountains where scattered 
late day thunderstorms are expected. Much of the same is expected 
Thursday as the ridge axis slightly amplifies over Idaho. 


Long term...Thursday night through Tuesday...the only change in 
the recent extended models is where will the precipitation be. 
Pattern remains the same as the forecast area is under a southwest 
flow between an upper level ridge over the intermountain west and 
an upper level trough over the Gulf of Alaska. Models still 
bringing monsoon moisture to the north in the southwest flow but 
each new model run places the moisture in different locations. 
With the uncertainty as to where precipitation will be...decided to 
trend toward a broad brush of probability of precipitation with afternoon and evening 
showers and thunderstorms. Also weak disturbances moving through 
the flow will help to enhance any afternoon and evening 
convection. Latest models show the first wave moving over the 
region Friday with another one right on the heels of the first one 
that will move over the area on Saturday. With the cloud cover and 
moisture over the region expect temperatures will be around 
normal. Latest models showing a breakdown of the stagnant pattern 
with a shift to a zonal flow over the Pacific northwest by late on 
Tuesday that would bring cooler temperatures but enough moisture 
in the zonal flow for slight chance probability of precipitation. 


&& 


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


&& 


$$ 


Weather.Gov/Boise 


Discussion...lc 
aviation.....Jt 
previous short term...vm 
previous long term....ja 






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