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Gilliam, Washington Weather Forecast
Gilliam, Washington Weather
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Weather Forecast for Gilliam, Washington : Walla Walla County
Issued: 1:31 am PST Dec 15, 2025 Latitude: 46.1273606 Longitude: -118.1785651 View on Google Maps

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Overnight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
30% chance of rain on Overnight 90% chance of rain on Monday 40% chance of rain on Tuesday 70% chance of rain & snow on Wednesday 100% chance of rain on Thursday 70% chance of rain & snow on Friday 20% chance of rain & snow on Saturday 20% chance of rain & snow on Sunday
Low: 51°F High: 63°F High: 57°F High: 48°F High: 51°F High: 48°F High: 45°F High: 46°F
Low: 44°F Low: 39°F Low: 36°F Low: 40°F Low: 33°F Low: 33°F  
Rain Rain Rain Rain & Snow Rain Rain & Snow Rain & Snow Rain & Snow
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Current Conditions at
WALLA WALLA - (KALW)
55°
Cloudy
as of 1:53 AM PST
Rel. Humidity: 47%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
6 MPH
180° South
Cloud Level(s): Solid Overcast at 9500ft
Current Conditions at
PENDLETON - (KPDT)
52°
Cloudy
as of 1:53 AM PST
Rel. Humidity: 53%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
5 MPH
090° East
Cloud Level(s): Solid Overcast at 9500ft
Current Conditions at
LEWISTON - (KLWS)
52°
Mostly Cloudy
as of 1:56 AM PST
Rel. Humidity: 46%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
3 MPH
060° Northeast
Cloud Level(s): Few at 9000ft, Broken at 11000ft
30% chance of rain Overnight Overnight... A 30 percent chance of rain, mainly after 4am. Cloudy, with a steady temperature around 51. Southeast wind around 13 mph.
90% chance of rain Monday Monday... Rain. High near 63. Breezy, with a south wind 21 to 26 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
60% chance of rain Monday Night Monday Night... Rain likely, mainly before 7pm. Mostly cloudy, with a low around 44. Breezy, with a southwest wind 16 to 24 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
40% chance of rain Tuesday Tuesday... A 40 percent chance of rain. Partly sunny, with a high near 57. Southwest wind 15 to 18 mph, with gusts as high as 24 mph.
90% chance of rain Tuesday Night Tuesday Night... Rain, mainly after 10pm. Low around 39. Windy, with a south wind 22 to 27 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
70% chance of rain & snow Wednesday Wednesday... Rain likely, mainly before 10am. Snow level 3100 feet lowering to 2500 feet. Partly sunny, with a high near 48. Windy. Chance of precipitation is 70%.
80% chance of rain Wednesday Night Wednesday Night... Rain, mainly after 4am. Low around 36. Chance of precipitation is 80%.
100% chance of rain Thursday Thursday... Rain. High near 51. Chance of precipitation is 100%.
90% chance of rain Thursday Night Thursday Night... Rain. Low around 40. Chance of precipitation is 90%.
70% chance of rain & snow Friday Friday... Rain likely, possibly mixed with snow, becoming all rain after 10am. Mostly cloudy, with a high near 48.
20% chance of rain & snow Friday Night Friday Night... A chance of rain and snow. Snow level 2300 feet. Mostly cloudy, with a low around 33.
20% chance of rain & snow Saturday Saturday... A chance of rain and snow. Snow level 1900 feet rising to 2500 feet in the afternoon. Partly sunny, with a high near 45.
20% chance of rain & snow Saturday Night Saturday Night... A chance of rain and snow. Snow level 2400 feet. Mostly cloudy, with a low around 33.
20% chance of rain & snow Sunday Sunday... A chance of rain and snow. Snow level 2200 feet rising to 2900 feet in the afternoon. Mostly cloudy, with a high near 46.
Current Radar Image


Sun Almanac for Gilliam, Washington
Sunrise: 07:29 AM
Sunset: 4:07 PM
Civil Sunrise:06:54 AM
Civil Sunset: 4:42 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:20 PM
Astro Sunrise: 05:40 AM
Astro Sunset: 5:57 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.