Weather WorldUnion Gap, WA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Union Gap, WA Weather Forecast
Union Gap, WA Weather Forecast Date: 1132 PM PDT Sat Sep 12 2026
The area/counties/county of: Yakima Valley, including the cities of: Naches, Sunnyside, Toppenish, and Yakima.or toggle through each period.
Rest of Tonight... Rain showers. Lows in the upper 40s to lower 50s. West wind 5 to 15 mph with gusts to around 25 mph. Chance of precipitation near 100%. Rainfall amounts up to a half of an inch possible.
Sunday... Rain showers. Highs in the upper 50s to lower 60s. Southwest wind 5 to 15 mph with gusts to around 30 mph. Chance of precipitation near 100%. Rainfall amounts up to a half of an inch possible.
Sunday Night... Mostly cloudy with a 20% chance of rain showers in the evening, then mostly clear overnight. Lows in the 40s. West wind 5 to 10 mph with gusts to around 20 mph.
Monday... Sunny. Highs in the mid 60s to lower 70s. Light wind.
Monday Night... Partly cloudy. Lows in the mid to upper 40s. Light wind.
Tuesday... Partly cloudy. Highs in the 60s. Lows in the mid 40s to lower 50s.
Tuesday Night... Partly cloudy. Highs in the 60s. Lows in the mid 40s to lower 50s.
Wednesday... Mostly clear. Highs in the upper 60s to upper 70s. Lows in the mid 40s to lower 50s.
Thursday... Mostly clear. Highs in the upper 60s to upper 70s. Lows in the mid 40s to lower 50s.
Friday... Mostly clear. Highs in the mid 70s to lower 80s. Lows in the upper 40s to mid 50s.
POP = Probability of Precipitation
Union Gap Radar Loop
Use the map search tool if you want to place a location marker on the radar map...