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Mattawa, Washington Weather Forecast
Mattawa, Washington Weather
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Weather Forecast for Mattawa, Washington : Grant County
Issued: 2:48 pm PST Dec 15, 2025 Latitude: 46.73791 Longitude: -119.9028234 View on Google Maps

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Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Cloudy on Tonight 30% chance of rain on Tuesday 20% chance of rain on Wednesday 90% chance of rain on Thursday 30% chance of rain & snow on Friday 20% chance of rain & snow on Saturday 30% chance of rain & snow on Sunday 40% chance of rain & snow on Monday
Low: 40°F High: 58°F High: 51°F High: 45°F High: 46°F High: 45°F High: 41°F High: 43°F
Low: 41°F Low: 36°F Low: 36°F Low: 31°F Low: 29°F Low: 30°F  
Cloudy Rain Rain Rain Rain & Snow Rain & Snow Rain & Snow Rain & Snow
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Current Conditions at
YAKIMA - (KYKM)
61°
Clear
as of 4:53 PM PST
Rel. Humidity: 51%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 24 MPH
230° Southwest
Cloud Level(s): Clear
Current Conditions at
ELLENSBURG - (KELN)
52°
Clear
as of 4:53 PM PST
Rel. Humidity: 71%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
26 MPH
Gust: 40 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
MOSES LAKE - (KMWH)
57°
Clear
as of 4:52 PM PST
Rel. Humidity: 71%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
12 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
EPHRATA - (KEPH)
57°
Clear
as of 4:53 PM PST
Rel. Humidity: 58%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.75 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 33 MPH
260° West
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 40. West wind 7 to 17 mph becoming southeast after midnight. Winds could gust as high as 28 mph.
30% chance of rain Tuesday Tuesday... A chance of rain before 10am, then a chance of rain after 1pm. Mostly sunny, with a high near 58. East wind 8 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
90% chance of rain Tuesday Night Tuesday Night... Rain, mainly between 10pm and 4am. Low around 41. Windy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
20% chance of rain Wednesday Wednesday... A 20 percent chance of rain before 10am. Mostly sunny, with a high near 51. Breezy, with a southwest wind around 23 mph, with gusts as high as 38 mph.
20% chance of rain Wednesday Night Wednesday Night... A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 36. Southwest wind 5 to 8 mph.
90% chance of rain Thursday Thursday... Rain. High near 45. Chance of precipitation is 90%.
70% chance of rain & snow Thursday Night Thursday Night... Rain likely before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 36. Chance of precipitation is 70%. Little or no snow accumulation expected.
30% chance of rain & snow Friday Friday... A chance of rain and snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 46. Chance of precipitation is 30%.
20% chance of rain Friday Night Friday Night... A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 31.
20% chance of rain & snow Saturday Saturday... A slight chance of rain and snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 45. Chance of precipitation is 20%.
20% chance of rain & snow Saturday Night Saturday Night... A slight chance of rain and snow. Partly cloudy, with a low around 29. Chance of precipitation is 20%.
30% chance of rain & snow Sunday Sunday... A chance of rain and snow. Partly sunny, with a high near 41. Chance of precipitation is 30%.
40% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
40% chance of rain & snow Monday Monday... A chance of rain and snow. Partly sunny, with a high near 43. Chance of precipitation is 40%.
Current Radar Image


Sun Almanac for Mattawa, Washington
Sunrise: 07:38 AM
Sunset: 4:12 PM
Civil Sunrise:07:03 AM
Civil Sunset: 4:47 PM
Nautical Sunrise: 06:24 AM
Nautical Sunset: 5:26 PM
Astro Sunrise: 05:47 AM
Astro Sunset: 6:03 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.