What is today's weather forecast for Sunnyside, WA?

Today's forecast for Sunnyside shows a low of 40 degrees Fahrenheit. A 30 percent chance of rain after 4am.

What is the 7-day weather forecast for Sunnyside, WA?

The 7-day forecast for Sunnyside shows highs from 44 to 60 degrees and lows from 28 to 40 degrees Fahrenheit. Expect precipitation on 8 days with chances of 20% or higher.

Will it rain in Sunnyside, WA this week?

Yes, rain is possible in Sunnyside this week. Precipitation chances: Monday (30% chance), Tuesday (90% chance), Wednesday (20% chance), Thursday (90% chance), Friday (40% chance), Saturday (50% chance), Sunday (50% chance), Monday (50% chance).

How accurate is the Sunnyside weather forecast?

WeatherForYou provides highly accurate Sunnyside forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Sunnyside, WA Weather Forecast and Current Conditions

WEATHER ALERTS - High Wind Watch - Wind Advisory

Current Conditions From Nearby Local Station

Switch to Metric Units

65°F
Feels Like 65°F

Humidity 52% Dew Point 46°F Wind SW 20 MPH Gusts 28 Barometer 29.84 in.

Visibility 10 mi.

Report from a MADIS/MESONET weather station 1.7 mi. ENE of central Sunnyside
at 4:35 PM Mon, Dec 15, 2025

Point Forecast at a Glance

MonDec 15

30%

TueDec 16

30%

WedDec 17

20%

ThuDec 18

90%

FriDec 19

40%

SatDec 20

50%

SunDec 21

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

Cooling trend continues with high temperatures dropping from 60°F to 44°F. Unsettled weather expected with wintry mix likely on at least 7 days.

Climate Context

This week's forecast shows temperatures running 11°F above the historical average for December. Normal highs for this period are around 38°F with lows around 25°F.

This Date in Weather History

1839 - The first of triple storms hit Massachusetts Bay. The storm produced whole gales, and more than 20 inches of snow in interior New England. There was great loss of life at Gloucester MA.

Sunnyside, WA 7 Day Weather Forecast Details

Monday Dec 15

Night: A 30 percent chance of rain after 4am. Partly cloudy, with a low around 40. South wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 39 mph.

Tuesday Dec 16

Day: A chance of rain before 10am, then a chance of rain after 1pm. Mostly sunny, with a high near 60. Southeast wind 6 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 30%.

Night: Rain, mainly between 10pm and 4am. Low around 39. South wind 13 to 21 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Dec 17

Day: A 20 percent chance of rain before 10am. Sunny, with a high near 51. West wind 18 to 21 mph, with gusts as high as 32 mph.

Night: A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 35. South wind 5 to 9 mph.

Thursday Dec 18

Day: Rain. High near 48. Chance of precipitation is 90%.

Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.

Friday Dec 19

Day: A chance of rain and snow before 10am, then a slight chance of rain. Partly sunny, with a high near 48. Chance of precipitation is 40%.

Night: A 20 percent chance of rain before 10pm. Snow level 2200 feet lowering to 1600 feet after midnight . Partly cloudy, with a low around 30.

Saturday Dec 20

Day: A slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Snow level 1600 feet rising to 2300 feet in the afternoon. Mostly sunny, with a high near 46.

Night: A slight chance of rain and snow. Partly cloudy, with a low around 28.

Sunday Dec 21

Day: A slight chance of rain and snow. Partly sunny, with a high near 44.

Night: A chance of rain and snow. Mostly cloudy, with a low around 28.

Monday Dec 22

Day: A chance of rain and snow. Partly sunny, with a high near 45.

About Sunnyside, WA

Sunnyside is a city in Yakima County, Washington, United States. The population was 16,375 at the 2020 census, making it the second-most populous city in Yakima County.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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