Sunnyside, WA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sunnyside, WA in one place.
Sunny, with a high near 77.
Local Weather Overview
This forecast page for Sunnyside, WA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 27, 2026 6:16 AM PDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Sunnyside, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 6:16 AM PDT
- Forecast office
- PDT
- Source
- NOAA / NWS
Daily Outlook
This Week in Sunnyside
Monday looks like the warmest upcoming period in Sunnyside at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 10 mph W.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 6:16 AM PDT
- Coverage
- 5 days
- Time zone
- America/Los_Angeles
- Forecast office
- PDT
- Radar station
- KPDT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 43.
Sunny, with a high near 78.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 84.
Partly cloudy, with a low around 48.
Mostly sunny, with a high near 79.
A slight chance of rain showers after 5am. Partly cloudy, with a low around 46.
A slight chance of rain showers before 11am. Mostly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Sunny
|
77°F |
5 to 8 mph
W
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
43°F |
0 to 8 mph
NW
|
|
Sunday
Aug 30
|
Sunny
|
78°F |
2 mph
S
|
|
Sunday Night
Aug 30
|
Partly Cloudy
|
45°F |
1 mph
E
|
|
Monday
Aug 31
|
Mostly Sunny
|
84°F |
2 mph
S
|
|
Monday Night
Aug 31
|
Partly Cloudy
|
48°F |
2 mph
W
|
|
Tuesday
Sep 1
|
Mostly Sunny
|
79°F |
1 to 9 mph
W
|
|
Tuesday Night
Sep 1
|
Partly Cloudy then Slight Chance Rain Showers
|
46°F |
0 to 9 mph
W
|
|
Wednesday
Sep 2
|
Slight Chance Rain Showers then Mostly Sunny
|
76°F |
0 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sunnyside.
