Hermiston, Oregon Weather Conditions

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Current Conditions

  • 46°
  • Clear
  • Wind: West 12 mph
  • Humidity: 79%
  • Visibility: 10.0 miles
  • Dew Point: 40°
  • Pressure: 30.22 in. +
  • Heat Index: 41

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
41°
48°
46°
45°
45°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Partly Cloudy
  • High: 50 °
  • Low: 34 °
  • Partly Cloudy
  • Tuesday
  • Mostly Cloudy
  • High: 50 °
  • Low: 43 °
  • Mostly Cloudy
  • Wednesday
  • Rain
  • High: 46 °
  • Low: 36 °
  • Rain
  • Thursday
  • Partly Cloudy
  • High: 43 °
  • Low: 30 °
  • Partly Cloudy
  • Friday
  • Mostly Cloudy
  • High: 46 °
  • Low: 36 °
  • Mostly Cloudy

Forecast for Hermiston, Oregon

Updated: 7:00 AM PST on December 22, 2014

  • Monday

    Partly cloudy. High of 50F. Winds from the WSW at 10 to 15 mph shifting to the WNW in the afternoon.

  • Monday Night

    Overcast in the evening, then mostly cloudy. Fog overnight. Low of 34F. Winds less than 5 mph.

  • Tuesday

    Mostly cloudy in the morning, then overcast. Fog early. High of 50F. Winds less than 5 mph.

  • Tuesday Night

    Overcast in the evening, then mostly cloudy with a chance of rain. Low of 43F. Winds from the SSW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Overcast with rain. High of 46F. Winds from the SW at 5 to 15 mph. Chance of rain 70%.

  • Wednesday Night

    Overcast with a chance of rain. Low of 36F. Winds from the NW at 10 to 15 mph shifting to the WSW after midnight. Chance of rain 80% with rainfall amounts near 0.4 in. possible.

  • Thursday

    Partly cloudy. High of 43F. Winds from the WSW at 10 to 15 mph.

  • Thursday Night

    Partly cloudy. Low of 30F. Winds from the SW at 5 to 10 mph.

  • Friday

    Mostly cloudy. High of 46F. Winds less than 5 mph.

  • Friday Night

    Overcast with a chance of rain. Low of 36F. Winds from the South at 5 to 20 mph. Chance of rain 50%.

  • Saturday

    Mostly cloudy with a chance of rain. High of 43F. Breezy. Winds from the SW at 15 to 30 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy with a chance of snow. Low of 32F. Winds from the WSW at 5 to 20 mph. Chance of snow 20%.

  • Sunday

    Partly cloudy with a chance of snow. High of 39F. Winds less than 5 mph. Chance of snow 20%.

  • Sunday Night

    Partly cloudy. Low of 27F. Winds less than 5 mph.

  • Monday

    Partly cloudy. High of 36F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 23F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 34F. Winds less than 5 mph.

  • Tuesday Night

    Partly cloudy. Low of 21F. Winds less than 5 mph.

  • Wednesday

    Mostly cloudy. Fog early. High of 34F. Winds less than 5 mph.

  • Wednesday Night

    Mostly cloudy. Fog overnight. Low of 21F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. Fog early. High of 36F. Winds less than 5 mph.

  • Thursday Night

    Clear. Fog overnight. Low of 21F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Record Report  Statement as of 12:49 am PST on December 22, 2014


... New daily record high temperature set for December 21st...

Note: stations marked with * indicate that the station reports once
per day. For consistency... these values are considered to have
occurred on the day the observation was taken but may have actually
occurred (especially for Max temperature) on the previous day.

Station previous new records
                         record/year record began

Yakima, WA 57 / 1974 59 1909




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Southeast 11th Street, Hermiston, OR

Updated: 8:10 AM PST

Temperature: 45.0 °F Dew Point: 41 °F Humidity: 86% Wind: North at - Pressure: 30.27 in Hourly Precipitation: - Windchill: 45 °F Graphs

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

Updated: 8:12 AM PST

Temperature: 43.0 °F Dew Point: 39 °F Humidity: 87% Wind: NW at 2.2 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: South Hill, Umatilla, OR

Updated: 8:13 AM PST

Temperature: 45.2 °F Dew Point: 40 °F Humidity: 82% Wind: West at 1.0 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: MesoWest ECHO OR US UPR, Echo, OR

Updated: 7:05 AM PST

Temperature: 50 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest JUNIPR OR US UPR, Helix, OR

Updated: 7:20 AM PST

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

Location: MesoWest Horse Heaven @ I-82 WA US WA DOT, Kennewick, WA

Updated: 7:15 AM PST

Temperature: 37 °F Dew Point: 36 °F Humidity: 96% Wind: WNW at 6 mph Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: RAWS UMATILLA OR US, Irrigon, OR

Updated: 7:29 AM PST

Temperature: 43 °F Dew Point: 42 °F Humidity: 95% Wind: East at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Paterson, Paterson, WA

Updated: 8:00 AM PST

Temperature: 44.1 °F Dew Point: 40 °F Humidity: 84% Wind: North at 2.0 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Pendleton-Stage Gulch Road, Pendleton, OR

Updated: 8:03 AM PST

Temperature: 43.3 °F Dew Point: 38 °F Humidity: 82% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Riverside High School, Boardman, OR

Updated: 8:13 AM PST

Temperature: 44.8 °F Dew Point: 40 °F Humidity: 84% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: MesoWest BARNHT OR US UPR, Pendleton, OR

Updated: 7:00 AM PST

Temperature: 42 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: West 43rd Avenue, Kennewick, WA

Updated: 8:11 AM PST

Temperature: 40.1 °F Dew Point: 36 °F Humidity: 86% Wind: North at - Pressure: 30.27 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: South Kennewick, Kennewick, WA

Updated: 8:12 AM PST

Temperature: 44.9 °F Dew Point: 36 °F Humidity: 71% Wind: WNW at 2.0 mph Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: National Weather Service, Pendleton, OR

Updated: 8:13 AM PST

Temperature: 43.8 °F Dew Point: 38 °F Humidity: 79% Wind: West at 13.4 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Middle Cold Springs Creek-Helix 6SW, Pendleton, OR

Updated: 5:00 AM PST

Temperature: 44.3 °F Dew Point: 41 °F Humidity: 87% Wind: West at 13.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service Pendleton or 
345 am PST Monday Dec 22 2014 


Updated aviation discussion 


Short term...today through Wednesday...a weather system that 
brought abundant rainfall and wind is now moving away from the County Warning Area 
and is being replaced by high pressure aloft. There are still some 
showers over the northeast Oregon/southeast Washington mountains as 
well as the east slopes of the Cascades early this morning. These 
should decrease today as the day progresses. High pressure will 
amplify tonight and Tuesday with dry conditions and mild 
temperatures. Winds should also be light during this period. Patchy 
fog will develop over the lower Columbia Basin and adjacent valley 
areas tonight and Tuesday morning...especially along the Columbia 
and Yakima rivers. The next weather system of concern will begin to 
spread moisture into the Cascades late Tuesday and Tuesday night. It 
will continue to spread eastward on Wednesday with likely probability of precipitation in 
most areas by Wednesday afternoon. Snow levels will be fairly high 
above 5000 feet in southern areas...and near 2500 feet in far 
northwest Kittitas County...along the Cascade east slopes. Thus 
there may be snow along the Washington Cascade east slopes...but 
elsewhere this looks to be primarily a rain event with snow only on 
the highest peaks on Christmas evening. May eventually need winter 
weather highlights for the Washington Cascade east slopes but it is 
still too soon for that and there is still too much uncertainty of 
snow amounts. This system will continue into the extended period 
beginning overnight Christmas evening. As previously mentioned 
conditions will be mild with maximum temperature readings mostly in 
the 40s to lower 50s today and Tuesday and then gradually cooling 
beginning Wednesday as cooler air moves into the region. It will 
also become locally breezy Wednesday afternoon and 
night...especially in the mountains. 88 


Long term...Wednesday night through Monday...a trough will move in 
Wednesday night with a chance of rain and mountain snow across the 
area. The trough will exit to the east on Thursday with just a 
chance of rain and snow confined mainly to the mountains. A 
northwesterly flow into the area Thursday night through Friday night 
will keep the area dry aside from a slight chance of snow in the 
mountains Thursday night. After that, another trough will move into 
the area but the GFS and European model (ecmwf) disagree about the timing. The GFS 
brings it through on Saturday while the European model (ecmwf) brings it through on 
Saturday night. Have added a slight chance of lower elevation rain 
and mountain snow to both periods for now until models come into 
better agreement. The GFS moves the trough east on Sunday then has 
our area under an offshore ridge Sunday night and Monday. The European model (ecmwf) 
keeps the trough further west with a northerly flow into the area. 
This will give a slight chance of rain and snow in the lower 
elevations and a chance of snow in the mountains Sunday and Sunday 
night then tapering off on Monday. For now have leaned towards the 
European model (ecmwf) solution. Temperatures will be in the middle 30s to middle 40s 
Thursday through Saturday then cool a few degrees on Sunday and 
Monday. Perry 


&& 


Aviation...12z tafs...skies will be broken to overcast today and 
tonight with ceilings mainly above 5000 feet above ground level. An exception will 
be krdm and kbdn where occasional MVFR ceilings and vcsh will be 
possible through 18z this morning. Winds will remain below 15 kts 
for the next 24 hours. Perry 


&& 


Preliminary point temps/pops... 
PDT 48 32 49 35 / 10 10 10 10 
alw 48 33 47 37 / 10 0 10 10 
psc 49 32 46 36 / 0 10 10 10 
ykm 45 32 43 34 / 10 10 10 30 
hri 49 34 47 37 / 10 10 10 10 
eln 42 31 41 33 / 10 10 10 30 
rdm 48 32 52 34 / 20 10 10 10 
lgd 43 30 43 34 / 20 10 10 10 
gcd 44 35 45 34 / 30 10 10 10 
dls 51 38 48 39 / 10 10 20 20 


&& 


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


&& 


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


$$ 


88/83/83 



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