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Hazardous Weather Conditions
Current conditions at
Sunnyside Municipal Airport (K1S5)
Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.
Clear
88°F
31°C
| Humidity | 41% |
| Wind Speed | N 0 MPH |
| Barometer | 29.91 in (1012.87 mb) |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Heat Index | 88°F (31°C) |
| Last update | 21 Aug 01:15 PM PDT |
Extended Forecast for
Zillah WA
Heat Advisory August 21, 01:23pm until August 21, 10:00pm
Red Flag Warning August 22, 12:00pm until August 22, 10:00pm
NOW until 10:00pm Fri

Heat Advisory
This Afternoon

High: 97 °F
Mostly Cloudy
Tonight

Low: 68 °F
Decreasing
CloudsSaturday

High: 95 °F
Becoming
SunnySaturday Night

Low: 56 °F
Mostly Clear
Sunday

High: 87 °F
Sunny
Sunday Night

Low: 55 °F
Mostly Clear
Monday

High: 90 °F
Sunny
Monday Night

Low: 59 °F
Mostly Clear
Detailed Forecast
This Afternoon
Mostly cloudy, with a high near 97. Light south wind.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 68. Light northwest wind.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 95. Light west wind increasing to 12 to 17 mph in the morning. Winds could gust as high as 29 mph.
Saturday Night
Mostly clear, with a low around 56. West wind 6 to 15 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 87. West wind around 5 mph becoming calm in the morning.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 86.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Zillah WA
46.4°N 120.27°W (Elev. 797 ft)
46.4°N 120.27°W (Elev. 797 ft)
1:11 pm PDT Aug 21, 2026
1pm PDT Aug 21, 2026-6pm PDT Aug 27, 2026



