Hermiston, Oregon Weather Conditions

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Current Conditions

  • 50°
  • Clear
  • Wind: East 7 mph
  • Humidity: 66%
  • Visibility: 10.0 miles
  • Dew Point: 39°
  • Pressure: 30.13 in. 0

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Next 12 Hours

11  pm
2  am
5  am
8  am
11  am
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
50°
45°
45°
48°
61°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Chance of Rain
  • High: 73 °
  • Low: 46 °
  • Chance of Rain
  • Tuesday
  • Chance of Rain
  • High: 59 °
  • Low: 39 °
  • Chance of Rain
  • Wednesday
  • Chance of Rain
  • High: 57 °
  • Low: 41 °
  • Chance of Rain
  • Thursday
  • Chance of Rain
  • High: 59 °
  • Low: 43 °
  • Chance of Rain
  • Friday
  • Chance of Rain
  • High: 66 °
  • Low: 37 °
  • Chance of Rain

Forecast for Hermiston, Oregon

Updated: 8:00 PM PDT on April 20, 2014

  • Sunday

    Partly cloudy. High of 70F. Winds from the South at 5 to 10 mph.

  • Sunday Night

    Partly cloudy. Low of 45F. Winds from the NE at 5 to 10 mph.

  • Monday

    Partly cloudy in the morning, then overcast with a chance of rain. High of 73F. Winds from the WNW at 5 to 10 mph. Chance of rain 50%.

  • Monday Night

    Overcast with rain. Low of 46F. Breezy. Winds from the NW at 10 to 20 mph shifting to the WSW after midnight. Chance of rain 60%.

  • Tuesday

    Overcast with a chance of rain. High of 59F. Breezy. Winds from the WSW at 20 to 25 mph with gusts to 30 mph. Chance of rain 50%.

  • Tuesday Night

    Overcast with a chance of rain. Low of 39F. Breezy. Winds from the WSW at 15 to 20 mph with gusts to 30 mph. Chance of rain 20%.

  • Wednesday

    Overcast with a chance of rain, then a chance of rain in the afternoon. High of 57F. Breezy. Winds from the WSW at 15 to 20 mph with gusts to 30 mph. Chance of rain 20%.

  • Wednesday Night

    Partly cloudy with a chance of rain after midnight. Low of 41F. Winds from the SSW at 5 to 20 mph.

  • Thursday

    Overcast with a chance of rain. High of 59F. Winds from the SSW at 5 to 10 mph. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy with a chance of rain after midnight. Fog overnight. Low of 43F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Overcast with a chance of rain. High of 66F. Winds from the NW at 5 to 20 mph shifting to the WSW in the afternoon. Chance of rain 50%.

  • Friday Night

    Partly cloudy. Low of 37F. Winds from the SW at 5 to 15 mph.

  • Saturday

    Mostly cloudy. High of 64F. Breezy. Winds from the WSW at 15 to 20 mph.

  • Saturday Night

    Partly cloudy. Low of 39F. Breezy. Winds from the SW at 10 to 20 mph.

  • Sunday

    Partly cloudy. High of 66F. Winds from the SSW at 10 to 15 mph.

  • Sunday Night

    Partly cloudy with a chance of rain. Low of 45F. Winds from the South at 10 to 15 mph. Chance of rain 20%.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 64F. Winds from the SW at 10 to 15 mph. Chance of rain 20%.

  • Monday Night

    Clear. Low of 37F. Winds from the SSW at 5 to 10 mph.

  • Tuesday

    Clear. High of 66F. Winds less than 5 mph.

  • Tuesday Night

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

  • Wednesday

    Partly cloudy. High of 70F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 43F. Winds from the WSW at 5 to 10 mph.

  • Thursday

    Clear. High of 70F. Winds from the WSW at 5 to 15 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: West Park Area, JW's Backyard, Hermiston, OR

Updated: 9:48 PM PDT

Temperature: 48.6 °F Dew Point: 34 °F Humidity: 58% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: South Hill, Umatilla, OR

Updated: 9:49 PM PDT

Temperature: 54.5 °F Dew Point: 35 °F Humidity: 47% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest ECHO OR US UPR, Echo, OR

Updated: 8:35 PM PDT

Temperature: 58 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest JUNIPR OR US UPR, Helix, OR

Updated: 7:45 PM PDT

Temperature: 64 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest Reese OR US CPCRC, Echo, OR

Updated: 8:00 PM PDT

Temperature: 55 °F Dew Point: 38 °F Humidity: 52% Wind: ENE at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: RAWS UMATILLA OR US, Irrigon, OR

Updated: 8:29 PM PDT

Temperature: 58 °F Dew Point: 38 °F Humidity: 47% Wind: North at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Paterson, Paterson, WA

Updated: 9:47 PM PDT

Temperature: 57.3 °F Dew Point: 35 °F Humidity: 43% Wind: NNE at 4.0 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Riverside High School, Boardman, OR

Updated: 9:49 PM PDT

Temperature: 48.6 °F Dew Point: 40 °F Humidity: 71% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: MesoWest BARNHT OR US UPR, Pendleton, OR

Updated: 8:00 PM PDT

Temperature: 64 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Willow Run Golf Course, Boardman, OR

Updated: 9:49 PM PDT

Temperature: 47.1 °F Dew Point: 37 °F Humidity: 68% Wind: SW at 1.6 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: MesoWest BOARD OR US UPR, Boardman, OR

Updated: 8:30 PM PDT

Temperature: 57 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: South Kennewick, Kennewick, WA

Updated: 9:44 PM PDT

Temperature: 51.3 °F Dew Point: 36 °F Humidity: 56% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Summit View, Summit View Kennewick, WA

Updated: 7:59 PM PDT

Temperature: 59.8 °F Dew Point: 31 °F Humidity: 34% Wind: Calm Pressure: 29.49 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: National Weather Service, Pendleton, OR

Updated: 9:49 PM PDT

Temperature: 52.8 °F Dew Point: 35 °F Humidity: 50% Wind: ENE at 4.1 mph Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest Upper Speare OR US CPCRC, Echo, OR

Updated: 7:00 PM PDT

Temperature: 59 °F Dew Point: 37 °F Humidity: 45% Wind: North at 6 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Pendleton or 
733 PM PDT sun Apr 20 2014 


Short term...southwest flow aloft over the region this evening 
and tonight with middle and high level clouds. This should keep 
temperatures in the 30s to lower 40s. Next upper level trough and 
cold front to impact the region look impressive on satellite off the 
coast. The front will move onshore Monday and bring increasing 
clouds to the forecast area. Showers are likely in the afternoon 
over the Cascades. This will be the last warm day for a while with 
highs in the middle to upper 60s. The front moves through Monday night 
with rain. Models have been consistent in bringing a steady rain 
with plenty of lift along the boundary. Cold upper trough overhead 
Tuesday with showers likely. Much cooler temperatures. 94 


&& 


Previous disc... /issued 445 PM PDT sun Apr 20 2014/ 


Short term...tonight through Wednesday. High pressure will continue 
to dominate the areas weather with dry conditions into tonight. A 
storm system will approach the two state area tomorrow with 
increasing clouds and showers into the afternoon. At first showers 
will develop over the Washington/or Cascades and then migrate into the basin 
and blue/Wallowa Mountains Monday night and increase in coverage and 
intensity into Tuesday morning. The system will slowly move east 
with decreasing rain showers Tuesday afternoon and evening. Another 
storm system will move across the two state area Wednesday with 
showers increasing especially in the mountains. Also pressure 
gradients tighten and breezy conditions are expected. 


Temperatures will be near normal until the cold front passes across 
the area and high temperatures Tuesday and Wednesday will be several 
degrees cooler. 


Long term...Wednesday night through Sunday night...Wednesday night 
a ridge of high pressure builds inland and Ushers in a warm front 
and attendant rain Wednesday night with the warm front continuing on 
Thursday. I increased probability of precipitation to likely for daytime period for Thursday 
as all model guidance points to rain amounts from daybreak to 
Sundown of 0.05-0.10 inch. Thursday night a middle/upper level long 
wave trough pushes a cold front to the Cascade crests and then 
nudges the front into forecast area during the day on Friday. The 
cold frontal boundary then moves slowly across the forecast area 
Friday. Friday night the cold front eases into Idaho and western 
Montana while the aforementioned middle/upper trough takes on a 
negative tilt as it swings inland over the region. The eastern 
mountains will be on the eastern flank of the trough Friday night 
thus the Blue Mountains and Wallowa Mountains will have orographic 
showers through Friday night. Saturday the long wave trough remains 
over the region with an upstream middle/upper level short wave 
approaching the western flank of the trough. Kept a chance of 
showers over mountains on Saturday by virtue of the trough remaining 
over the interior Pacific northwest. Saturday night through Sunday 
the upstream short wave moves across the forecast area with another 
middle/upper short wave hot on its heals moving into forecast area 
Sunday night for a chance of showers Saturday night through Sunday 
night. Polan 


Aviation...00z tafs...taf sites will have VFR conditions over the 
next 24 hours. Mostly cloudy high level clouds late this afternoon 
through this evening. Cloud bases will lower and thicken overnight 
becoming scattered to broken at or above 10000 feet above ground level by around daybreak on Monday 
morning with broken ceilings 7000-10000 feet from daybreak Monday through 
Monday afternoon. Winds will be less than 10 kts through Monday 
morning and then increase a tad to 6-12 kts Monday afternoon. 
Polan 


&& 


Preliminary point temps/pops... 
PDT 42 64 42 53 / 0 10 70 70 
alw 44 66 45 54 / 0 10 70 70 
psc 41 69 47 59 / 0 10 70 70 
ykm 40 64 39 56 / 0 20 70 60 
hri 40 67 44 57 / 0 10 70 70 
eln 38 64 39 55 / 0 30 70 60 
rdm 35 65 34 49 / 0 30 70 70 
lgd 36 66 38 48 / 0 10 70 70 
gcd 34 66 35 45 / 0 20 70 70 
dls 44 65 45 54 / 0 30 70 70 


&& 


PDT watches/warnings/advisories... 
or...none. 
Washington...none. 
&& 


Threat index 
Monday : green 
Tuesday : green 
Wednesday : green 


Green: none or limited need for watches, warnings, or advisories. 
Yellow: a few watches, warnings, or advisories possible or in effect. 
Red: numerous watches, warnings, or advisories possible or in effect. 


For additional weather information, check our web site at... 
www.Weather.Gov/Pendleton 


$$ 


94/ 



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