Hermiston, Oregon Weather Conditions

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Current Conditions

  • 48°
  • Overcast
  • Wind: Calm
  • Humidity: 89%
  • Visibility: 10.0 miles
  • Dew Point: 45°
  • Pressure: 30.05 in. 0

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Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
46°
45°
54°
61°
52°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of Rain
  • High: 61 °
  • Low: 43 °
  • Chance of Rain
  • Saturday
  • Chance of Rain
  • High: 64 °
  • Low: 43 °
  • Chance of Rain
  • Sunday
  • Chance of Rain
  • High: 59 °
  • Low: 39 °
  • Chance of Rain
  • Monday
  • Partly Cloudy
  • High: 57 °
  • Low: 37 °
  • Partly Cloudy
  • Tuesday
  • Chance of Rain
  • High: 66 °
  • Low: 41 °
  • Chance of Rain

Forecast for Hermiston, Oregon

Updated: 2:00 AM PDT on October 24, 2014

  • Friday

    Mostly cloudy with a chance of rain. High of 61F. Winds from the NE at 5 to 10 mph. Chance of rain 40%.

  • Friday Night

    Overcast with a chance of rain in the evening, then partly cloudy. Fog overnight. Low of 43F. Winds from the North at 5 to 15 mph. Chance of rain 40%.

  • Saturday

    Overcast with a chance of rain. High of 64F. Breezy. Winds from the NNW at 15 to 20 mph with gusts to 30 mph shifting to the West in the afternoon. Chance of rain 30%.

  • Saturday Night

    Mostly cloudy with a chance of rain, then a chance of rain after midnight. Low of 43F. Breezy. Winds from the SW at 15 to 25 mph with gusts to 30 mph. Chance of rain 30%.

  • Sunday

    Partly cloudy with a chance of rain. High of 59F. Windy. Winds from the SW at 20 to 25 mph with gusts to 35 mph. Chance of rain 20%.

  • Sunday Night

    Partly cloudy. Low of 39F. Winds from the SW at 10 to 15 mph.

  • Monday

    Partly cloudy. High of 57F. Winds from the SW at 5 to 10 mph.

  • Monday Night

    Partly cloudy with a chance of rain after midnight. Low of 37F. Winds from the SSE at 5 to 10 mph.

  • Tuesday

    Overcast with a chance of rain in the morning, then partly cloudy with a chance of rain. High of 66F. Breezy. Winds from the SSW at 10 to 20 mph. Chance of rain 30%.

  • Tuesday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 41F. Breezy. Winds from the SSW at 10 to 20 mph. Chance of rain 40%.

  • Wednesday

    Clear. High of 63F. Breezy. Winds from the SW at 15 to 25 mph.

  • Wednesday Night

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

  • Thursday

    Mostly cloudy with a chance of rain. High of 63F. Breezy. Winds from the South at 10 to 20 mph shifting to the WSW in the afternoon. Chance of rain 40%.

  • Thursday Night

    Partly cloudy with a chance of rain. Low of 39F. Winds from the SE at 5 to 10 mph shifting to the NNE after midnight. Chance of rain 20%.

  • Friday

    Mostly cloudy. High of 64F. Winds from the West at 10 to 15 mph.

  • Friday Night

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

  • Saturday

    Mostly cloudy with a chance of rain. High of 63F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

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

  • Sunday

    Clear. High of 63F. Winds from the SW at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 41F. Winds less than 5 mph.

  • Monday

    Clear. High of 63F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 41F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Special Statement  Statement as of 4:53 am PDT on October 24, 2014


... Windy conditions expected for Saturday and Saturday night...

A deep low pressure system will develop along the Pacific northwest
coast and it will move inland on Saturday. Tightening pressure
gradients ahead of a cold front with this system will cause windy
conditions to develop over much of the forecast area on Saturday.
The strongest winds will be over central Oregon... north central
Oregon as well as the lower Columbia Basin and the Blue Mountain
foothills. While it is uncertain at this time if wind speeds will
reach advisory criteria... strong winds will make travel difficult
across the area. It is advised not to travel on Saturday... but if
you must please use caution due to strong winds making driving
difficult.



438 am PDT Fri Oct 24 2014

... Windy conditions expected for tonight and Saturday...

A deep low pressure system will develop along the Pacific
northwest coast and it will move inland on Saturday. Tightening
pressure gradients ahead of a cold front with this system will
cause windy conditions to develop over much of the forecast area
on Saturday. The strongest winds will be over central
Oregon... north central Oregon as well as the lower Columbia Basin
and the Blue Mountain foothills. While it is uncertain at this
time if wind speeds will reach advisory or High Wind Warning
criteria... strong winds will make travel difficult across the
area. The winds may also create areas of blowing dust that reduce
visibilities significantly near freshly plowed fields. It is
advised to not travel on Saturday... but if you must please use
caution due to strong winds making driving difficult and also for
reduced visibility in blowing dust.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 6:28 AM PDT

Temperature: 47.1 °F Dew Point: 47 °F Humidity: 99% Wind: SW at 5.4 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: South Hill, Umatilla, OR

Updated: 6:29 AM PDT

Temperature: 49.1 °F Dew Point: 44 °F Humidity: 82% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: MesoWest JUNIPR OR US UPR, Helix, OR

Updated: 4:50 AM PDT

Temperature: 54 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MesoWest Reese OR US CPCRC, Echo, OR

Updated: 5:00 AM PDT

Temperature: 51 °F Dew Point: 46 °F Humidity: 84% Wind: ESE at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 5:15 AM PDT

Temperature: 47 °F Dew Point: 42 °F Humidity: 83% Wind: NE at 2 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: RAWS UMATILLA OR US, Irrigon, OR

Updated: 5:29 AM PDT

Temperature: 45 °F Dew Point: 44 °F Humidity: 96% Wind: South at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Paterson, Paterson, WA

Updated: 6:22 AM PDT

Temperature: 49.1 °F Dew Point: 45 °F Humidity: 86% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Pendleton-Stage Gulch Road, Pendleton, OR

Updated: 6:25 AM PDT

Temperature: 47.7 °F Dew Point: 44 °F Humidity: 86% Wind: ESE at 3.0 mph Pressure: 27.05 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: MesoWest BARNHT OR US UPR, Pendleton, OR

Updated: 5:20 AM PDT

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

Location: Willow Run Golf Course, Boardman, OR

Updated: 6:28 AM PDT

Temperature: 46.2 °F Dew Point: 45 °F Humidity: 95% Wind: SW at 2.7 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: South Kennewick, Kennewick, WA

Updated: 4:54 AM PDT

Temperature: 48.3 °F Dew Point: 43 °F Humidity: 83% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: National Weather Service, Pendleton, OR

Updated: 6:29 AM PDT

Temperature: 51.5 °F Dew Point: 45 °F Humidity: 79% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.01 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 
415 am PDT Friday Oct 24 2014 


Updated aviation discussion 


Short term...today through Sunday...a broad upper trough continues 
off the Pacific northwest coast with weak weather disturbances 
rotating around it and up through the County Warning Area. This upper trough is 
expected to dig a closed upper low off the coast by late Friday and 
then will swing up through the Pacific northwest on Saturday as a 
warm front. The warm front will push a band of precipitation 
northward as the upper low digs off the coast. This pattern will 
bring significant precipitation to the entire County Warning Area overnight tonight 
with a break to occur on Saturday morning. After that an associated 
cold front with the low will move into the County Warning Area Saturday afternoon 
and night with showers continuing Saturday night with an upper 
trough passage. This pattern will persist on Sunday with showers 
across the County Warning Area...especially the northeast mountains and Cascades. 
Then another weather system will move into the County Warning Area by late Monday 
with only a brief break between systems. Pressure gradients tighten 
up significantly Saturday afternoon and night. This will result in 
significant winds which has the potential to reach Wind Advisory 
speeds. Right now there is too much uncertainty to issue any 
highlights about this but it will become windy in most areas in any 
case and will be monitored closely. Temperatures will stay cool 
through the next few days. 88 


Long term...Sunday night through Thursday. Periods of rain and high 
elevation snow and breezy winds are forecast through the extended 
period. Showers and gusty winds Sunday evening will taper off 
overnight as a weak transitory ridge shifts east of the Cascades. 
Other than isolated mountain showers...a dry forecast is in store 
for Monday. The ridge will flatten considerably as a strong westerly 
flow takes over resulting in scattered showers Monday night through 
Wednesday...mainly over the mountains. Snow levels during this time 
will range from 6000-7000 feet. The deterministic models are once 
again diverging by day 6...and confidence is low based on the high 
degree of spread in the ensemble runs. The GFS is farther north and 
east compared to the European model (ecmwf) of a large upper level trough off the 
eastern Pacific during the middle week. Despite the differences in the 
models...both the GFS and European model (ecmwf) are advertising a chance of rain 
Wednesday night through Thursday night. Wister 


&& 


Aviation...12z tafs. Forecasting ceilings and visibilities was a challenge 
for the 12z tafs. Believe rain today will likely deteriorate 
conditions from VFR to MVFR...and locally IFR. Rain will soon 
develop at krdm and kbdn then spread northward to the or/Washington border 
by 18z then over south central Washington by noon. There will be 
clearing behind the system tonight that may result in patchy fog and 
stratus clouds. Forecast soundings show radiational fog at kpsc by 
sunrise Saturday. An easterly surface gradient through the eastern 
Columbia River gorge may result in low level upslope to develop 
stratus clouds at kdls overnight. Wister 




&& 


Preliminary point temps/pops... 
PDT 55 46 59 45 / 50 30 20 30 
alw 59 49 60 49 / 50 50 20 30 
psc 59 45 62 48 / 20 60 20 30 
ykm 55 40 56 41 / 20 60 30 40 
hri 58 43 62 46 / 40 50 20 30 
eln 53 39 56 40 / 10 70 30 40 
rdm 55 38 58 36 / 70 20 20 40 
lgd 54 43 63 44 / 70 20 20 30 
gcd 57 42 62 42 / 70 10 20 40 
dls 57 45 60 47 / 70 60 50 50 


&& 


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


&& 


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


$$ 


88/85/85 












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