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Alto, Washington Weather Forecast
Alto, Washington Weather
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Weather Forecast for Alto, Washington : Columbia County
Issued: 10:35 pm PST Dec 17, 2025 Latitude: 46.3862527 Longitude: -118.1116182 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
10% chance of rain & snow on Tonight 100% chance of rain & snow on Thursday 70% chance of rain & snow on Friday 30% chance of rain & snow on Saturday 60% chance of rain & snow on Sunday 70% chance of rain on Monday 20% chance of rain & snow on Tuesday 20% chance of rain & snow on Wednesday
Low: 35°F High: 50°F High: 43°F High: 43°F High: 45°F High: 45°F High: 43°F High: 40°F
Low: 36°F Low: 32°F Low: 31°F Low: 34°F Low: 31°F Low: 31°F  
Rain & Snow Rain & Snow Rain & Snow Rain & Snow Rain & Snow Rain Rain & Snow Rain & Snow
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Current Conditions at
WALLA WALLA - (KALW)
43°
Clear
as of 9:53 PM PST
Rel. Humidity: 56%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
8 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
PASCO - (KPSC)
45°
Feels like 39°F
Clear
as of 9:53 PM PST
Rel. Humidity: 65%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
9 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
LEWISTON - (KLWS)
43°
Clear
as of 9:56 PM PST
Rel. Humidity: 52%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
7 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
PULLMAN - (KPUW)
36°
Feels like 28°F
Clear
as of 9:53 PM PST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
10 MPH
240° Southwest
Cloud Level(s): Clear
10% chance of rain & snow Tonight Tonight... A slight chance of rain and snow after 4am. Snow level 2500 feet. Mostly cloudy, with a low around 35. South wind 15 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 10%.
100% chance of rain & snow Thursday Thursday... A slight chance of rain and snow before 7am, then rain. Snow level 2700 feet rising to 7400 feet in the afternoon. High near 50. South wind 11 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
100% chance of rain Thursday Night Thursday Night... Rain. Low around 36. Windy, with a southwest wind 31 to 33 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
70% chance of rain & snow Friday Friday... Rain likely before 10am, then a chance of rain and snow. Snow level 3000 feet lowering to 2100 feet. Cloudy, then gradually becoming mostly sunny, with a high near 43. Breezy, with a southwest wind 21 to 24 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
40% chance of rain & snow Friday Night Friday Night... A chance of rain and snow before 1am, then a slight chance of snow. Snow level 2000 feet. Partly cloudy, with a low around 32. Breezy, with a southwest wind 20 to 23 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
30% chance of rain & snow Saturday Saturday... A chance of snow before 10am, then a chance of rain and snow. Snow level rising to 2500 feet in the afternoon. Mostly sunny, with a high near 43. Breezy. Chance of precipitation is 30%.
30% chance of rain & snow Saturday Night Saturday Night... A chance of rain and snow, mainly after 4am. Snow level 2600 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
60% chance of rain & snow Sunday Sunday... A chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 45. Chance of precipitation is 60%.
70% chance of rain Sunday Night Sunday Night... Rain likely. Mostly cloudy, with a low around 34. Chance of precipitation is 70%.
70% chance of rain Monday Monday... Rain likely, mainly before 10am. Partly sunny, with a high near 45.
20% chance of rain Monday Night Monday Night... A chance of rain. Partly cloudy, with a low around 31.
20% chance of rain & snow Tuesday Tuesday... A chance of rain and snow. Partly sunny, with a high near 43.
20% chance of rain & snow Tuesday Night Tuesday Night... A chance of rain and snow. Mostly cloudy, with a low around 31.
20% chance of rain & snow Wednesday Wednesday... A chance of rain and snow. Partly sunny, with a high near 40.
Current Radar Image


Sun Almanac for Alto, Washington
Sunrise: 07:32 AM
Sunset: 4:07 PM
Civil Sunrise:06:57 AM
Civil Sunset: 4:42 PM
Nautical Sunrise: 06:18 AM
Nautical Sunset: 5:20 PM
Astro Sunrise: 05:42 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.