La Grande, Oregon Weather Conditions

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Current Conditions

  • 41°
  • Mostly Cloudy
  • Wind: Calm
  • Humidity: 65%
  • Visibility: 10.0 miles
  • Dew Point: 30°
  • Pressure: 30.00 in. -

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Next 12 Hours

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39°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Rain
  • High: 45 °
  • Low: 34 °
  • Rain
  • Saturday
  • Rain
  • High: 45 °
  • Low: 48 °
  • Rain
  • Sunday
  • Rain
  • High: 50 °
  • Low: 43 °
  • Rain
  • Monday
  • Partly Cloudy
  • High: 50 °
  • Low: 43 °
  • Partly Cloudy
  • Tuesday
  • Chance of Rain
  • High: 48 °
  • Low: 43 °
  • Chance of Rain

Forecast for La Grande, Oregon

Updated: 1:00 PM PST on December 19, 2014

Flood Watch in effect from Saturday afternoon through Monday afternoon...
  • Friday

    Overcast with snow and rain, then rain in the afternoon. High of 45F. Breezy. Winds from the SSE at 15 to 25 mph with gusts to 30 mph. Chance of precipitation 80% with accumulations up to 1 in. possible.

  • Friday Night

    Overcast with a chance of rain, then a chance of snow and a chance of rain after midnight. Low of 34F with a windchill as low as 27F. Breezy. Winds from the SSE at 15 to 25 mph with gusts to 30 mph. Chance of precipitation 70% .

  • Saturday

    Mostly cloudy with a chance of snow and rain in the morning, then overcast with rain. High of 45F. Windy. Winds from the SSE at 25 to 35 mph with gusts to 40 mph. Chance of precipitation 90% .

  • Saturday Night

    Overcast with rain. Low of 48F. Windy. Winds from the South at 25 to 35 mph with gusts to 40 mph. Chance of rain 90% with rainfall amounts near 0.5 in. possible.

  • Sunday

    Overcast with rain. High of 50F. Winds from the WSW at 10 to 15 mph. Chance of rain 100% with rainfall amounts near 0.3 in. possible.

  • Sunday Night

    Overcast with a chance of rain. Low of 43F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Monday

    Overcast in the morning, then mostly cloudy. High of 50F. Winds less than 5 mph.

  • Monday Night

    Overcast in the evening, then mostly cloudy. Low of 43F. Winds from the SSE at 5 to 10 mph.

  • Tuesday

    Mostly cloudy with a chance of rain in the afternoon. High of 48F. Winds from the South at 5 to 15 mph. Chance of rain 20%.

  • Tuesday Night

    Overcast with a chance of rain. Low of 43F. Winds less than 5 mph. Chance of rain 50%.

  • Wednesday

    Overcast with a chance of snow. High of 45F. Winds from the North at 5 to 10 mph. Chance of snow 60% with accumulations up to 1 in. possible.

  • Wednesday Night

    Overcast with a chance of rain. Low of 27F. Winds from the NW at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Mostly cloudy with a chance of snow. High of 39F. Winds from the WNW at 5 to 10 mph. Chance of snow 20%.

  • Thursday Night

    Partly cloudy. Low of 18F. Winds less than 5 mph.

  • Friday

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

  • Friday Night

    Partly cloudy. Low of 16F. Winds less than 5 mph.

  • Saturday

    Partly cloudy with a chance of snow. High of 36F. Winds less than 5 mph. Chance of snow 20%.

  • Saturday Night

    Mostly cloudy with a chance of snow. Fog overnight. Low of 19F. Winds less than 5 mph. Chance of snow 40% with accumulations up to 1 in. possible.

  • Sunday

    Overcast with a chance of snow. Fog early. High of 34F. Winds less than 5 mph. Chance of snow 40% with accumulations up to 1 in. possible.

  • Sunday Night

    Overcast with a chance of snow. Fog overnight. Low of 18F. Winds less than 5 mph. Chance of snow 40% with accumulations up to 2 in. possible.

  • Monday

    Partly cloudy with a chance of snow. Fog early. High of 23F. Winds less than 5 mph. Chance of snow 40%.

  • Monday Night

    Clear. Fog overnight. Low of 18F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Areal Flood Watch  Statement as of 3:06 PM PST on December 19, 2014


... Flood Watch in effect from Saturday afternoon through Monday
afternoon...

The National Weather Service in Pendleton has issued a

* Flood Watch for portions of Oregon and southeast Washington...
including the following areas... in Oregon... foothills of the
northern Blue Mountains of Oregon... foothills of the southern
Blue Mountains of Oregon... Grande Ronde Valley... John Day
basin... northern Blue Mountains of Oregon... ochoco-John Day
Highlands... southern Blue Mountains of Oregon and Wallowa
County. In southeast Washington... foothills of the Blue
Mountains of Washington and northwest Blue Mountains of
Washington.

* From Saturday afternoon through Monday afternoon

* 48 hour precipitation amounts will range from 2 to 4 inches.
The snow level will be around 3000 feet Saturday and rise to
near 8000 feet on Sunday.

* Small creeks and streams will start to rise on Saturday with the
larger rivers seeing substantial rises Saturday night and
Sunday. No flooding is forecast along the larger rivers... but
several rivers are forecast to reach action stage. The small
creeks and streams could see minor flooding... especially Sunday
as moderate rain and snow melt are expected to occur.

Precautionary/preparedness actions...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
flood warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: La Grande, La Grande, OR

Updated: 3:25 PM PST

Temperature: 37.6 °F Dew Point: 35 °F Humidity: 90% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: La Grande - N. Ash Street, La Grande, OR

Updated: 2:50 PM PST

Temperature: 38.3 °F Dew Point: - Humidity: 93% Wind: North at 2.5 mph Pressure: 27.09 in Hourly Precipitation: - Windchill: 38 °F Graphs

Location: MesoWest Ladd Canyon at Charles Reynolds OR US ODOT, La Grande, OR

Updated: 3:00 PM PST

Temperature: 39 °F Dew Point: 35 °F Humidity: 83% Wind: South at 11 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: MesoWest Ladd Creek (I-84 MP 270.9) OR US ODOT, La Grande, OR

Updated: 2:51 PM PST

Temperature: 37 °F Dew Point: 36 °F Humidity: 93% Wind: West at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: MesoWest IMBLER OR US AGRIMET, Imbler, OR

Updated: 2:00 PM PST

Temperature: 41 °F Dew Point: 38 °F Humidity: 88% Wind: SSE at 8 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: MesoWest UNION OR US UPR, Union, OR

Updated: 2:00 PM PST

Temperature: 46 °F Dew Point: - Humidity: - Wind: ESE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: La Grande, OR

Updated: 3:14 PM PST

Temperature: 39.8 °F Dew Point: 36 °F Humidity: 86% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: High School, Imbler, OR

Updated: 3:25 PM PST

Temperature: 39.7 °F Dew Point: 36 °F Humidity: 85% Wind: SE at 3.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: MesoWest Ladd Canyon at the Summit (I-84 OR US ODOT, Union, OR

Updated: 2:48 PM PST

Temperature: 36 °F Dew Point: 32 °F Humidity: 87% Wind: SE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: RAWS LAGRANDE 1 OR US, Summerville, OR

Updated: 2:14 PM PST

Temperature: 39 °F Dew Point: 36 °F Humidity: 88% Wind: South at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: South Main, Union, OR

Updated: 3:19 PM PST

Temperature: 40.9 °F Dew Point: 37 °F Humidity: 87% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: City Hall, Cove, OR

Updated: 3:21 PM PST

Temperature: 41.1 °F Dew Point: 35 °F Humidity: 80% Wind: ESE at 2.0 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: 3 north of Elgin, Elgin, OR

Updated: 3:25 PM PST

Temperature: 40.1 °F Dew Point: 33 °F Humidity: 76% Wind: Calm Pressure: 29.73 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: MesoWest NPOWDR OR US UPR, North Powder, OR

Updated: 2:05 PM PST

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

Location: 5 Miles North of Elgin, Elgin, OR

Updated: 3:25 PM PST

Temperature: 38.7 °F Dew Point: 36 °F Humidity: 89% Wind: SSW at 1.1 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: RAWS BLACK MTN RIDGE OR US, Meacham, OR

Updated: 2:17 PM PST

Temperature: 33 °F Dew Point: 32 °F Humidity: 95% Wind: WSW at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: RAWS POINT PROM II OR US, Cove, OR

Updated: 2:15 PM PST

Temperature: 28 °F Dew Point: 26 °F Humidity: 91% Wind: SW at 8 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...corrected 
National Weather Service Pendleton or 
248 PM PST Friday Dec 19 2014 


Short term...tonight and Saturday...will see a brief break in 
precipitation this evening, then a strong Pacific storm will move into the 
region late tonight and Saturday. This system will cause significant 
precipitation and increasing winds, especially during the day 
Saturday. Snow levels across much of the region will be between 3500 
and 4000 feet overnight. These snow levels will gradually rise 
across the area Saturday as the precipitation and winds increase. Still 
uncertain as to the amount of snow that will fall over the higher 
elevations east of the Cascades. The main snow fall in these areas 
will occur during the day Saturday, and will therefore hold off on 
issuing advisories in these areas. Do have decent confidence that 
significant snow will accumulate, especially above 2000 feet, in 
western Kittitas County late tonight into Saturday. Thus will issue 
a Winter Weather Advisory for snow in this area. Winds will increase 
and become very windy over portions of the area Saturday afternoon 
and will wind advisories for a number of our central Oregon and 
Washington zones, as well as the Blue Mountain foothills. 90 


Long term...Saturday night through Monday night...a very strong 
upper level jet stream will bring above normal moisture and strong 
dynamic lift to forecast area Saturday night through Sunday night. 
The jet stream will usher in a warm front with dramatically rising 
snow levels during the day on Saturday night and Sunday resulting in 
copious amounts of rain falling on the snowpack in the mountains. 
Temperatures will also remain above freezing in much of the 
mountains Saturday night and Sunday night resulting in snowmelt and 
runoff from snowmelt and the rain. As such area rivers, streams and 
creeks will rise to or above bankfull in some areas. At a minimum 
1.00-1.50 inches of rain are expected in the Blue Mountains and the 
Wallowa Mountains for the 36 hour period from Sundown on Saturday 
afternoon through sunup on Monday. Lower elevations can expect to 
receive anywhere from 0.20 to 1.00 inch of rain from Saturday night 
through Sunday night. Snow levels rise to around 6000-8000 by 
daybreak on Sunday with the lower snow levels in the Washington 
Cascades. Snow levels will remain high on Sunday, around 6000 feet 
along the east slopes of the Washington Cascades and rise to 
7500-8500 feet in the central and northeast Oregon while the warm 
front remains overhead on Sunday. Snow levels lower to 4500-5500 
feet along the east slopes of the Washington Cascades Sunday night 
and lower to 6000-7500 feet Sunday night in central and northeast 
Oregon. An upper level ridge of high pressure builds over the region 
Monday and Monday night for sinking air yielding mainly dry 
conditions, although the higher mountains will keep a low chance of 
precipitation Monday/Monday night. Polan 


Tuesday through Friday night...weak high pressure will remain over 
the area through the morning of Christmas evening. Models are struggling 
with the amplitude of the high...as the European model (ecmwf) is more suppressed and 
will provide a more moist westerly flow to the area. The GFS has the 
ridge more amplified with the moisture overruning to the north. 
Assuming minimal cloud cover this would present a fog scenario for 
the lower elevations. 


Wednesday evening a weather system is expected to impact the area 
with more favorable chances of precipitation. But models have been 
struggling to handle the snow levels and when the rain will 
transition to snow. Latest GFS guidance indicates that the lower 
elevations may not cool down enough for snow by Friday night. But 
the European model (ecmwf) has snow at all levels late Christmas evening. Right now snow 
amounts are too difficult to forecast with the run to run 
inconsistency and lack of current model agreement. As the system 
exits the area...cold dry northwest flow sets in for the remainder 
of the extended. Weber 


&& 


Previous aviation discussion...18z tafs...a cold front is moving 
across the lower Columbia Basin this morning with kpdt radar showing 
rain ahead of the front along the foothills of the northern Blue 
Mountains and -ra at kpdt and kalw, which should end by 20z. Areas 
of MVFR/IFR ceilings/visibility in fog and low stratus are expected for 
remainder of this morning with some improvement after 20z to VFR. 
However, kykm is expected to remain MVFR/IFR through this afternoon. 
After 03z/20th expect ceilings to lower to MVFR/IFR with some fog 
through overnight. LIFR visibilities are not expected Saturday morning. 
Polan 


&& 


Hydrology...the next Pacific system will bring significant 
precipitation to the region this weekend. Initially the precipitation will 
fall as snow at the highest elevations, but snow levels will rise 
Saturday into Sunday. Thus there will be a combination of rain and 
snow melt leading to significant rises on area rivers Sunday into 
Monday. As such will issue flood watches for a large portion of the 
area. 90 


&& 


Preliminary point temps/pops... 
PDT 36 49 47 56 / 20 80 90 80 
alw 39 50 45 56 / 20 80 100 90 
psc 37 48 43 55 / 20 80 80 40 
ykm 35 41 36 49 / 20 80 80 40 
hri 36 49 44 58 / 20 80 80 50 
eln 32 39 34 46 / 20 90 100 60 
rdm 35 49 42 55 / 50 80 80 70 
lgd 35 45 40 51 / 20 90 100 100 
gcd 35 48 42 51 / 20 80 100 80 
dls 36 45 44 54 / 40 90 100 90 


&& 


PDT watches/warnings/advisories... 
or...Flood Watch from Saturday afternoon through Monday afternoon 
orz041-509>511. 


Wind Advisory from noon Saturday to noon PST Sunday orz510-511. 


Flood Watch from Saturday afternoon through Monday afternoon 
orz049-050-502-503-505>508. 


Wind Advisory from noon Saturday to noon PST Sunday orz507. 


Wind Advisory from noon Saturday to noon PST Sunday orz508. 


Washington...Flood Watch from Saturday afternoon through Monday afternoon 
waz024-026-027-520-521. 


Flood Watch from Saturday afternoon through Monday afternoon 
waz029-030. 


Wind Advisory from noon Saturday to noon PST Sunday waz027-521. 


Wind Advisory from noon Saturday to noon PST Sunday waz029. 


Winter Weather Advisory from 10 PM this evening to 4 PM PST 
Saturday for western Kittitas County in the waz520. 


&& 


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


$$ 


90/99/89/99 



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