National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

Yakima Air Terminal - McAllister Field (KYKM)

Lat: 46.56402°NLon: 120.53484°WElev: 1043.0ft.

NA

N/A

Humidity NA
Wind Speed NA NA MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

Union Gap WA

  • Overnight

    Overnight: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 58. Calm wind becoming northwest around 5 mph after midnight.

    Low: 58 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 88. Light and variable wind becoming south 5 to 7 mph in the afternoon.

    High: 88 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 55. West wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers after 11am. Partly sunny, with a high near 73.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers. Partly sunny, with a high near 71.

    High: 71 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 53. Calm wind.
Monday
Sunny, with a high near 86. Light and variable wind.
Monday Night
Increasing clouds, with a low around 58. Calm wind becoming northwest around 5 mph after midnight.
Tuesday
Mostly cloudy, with a high near 88. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 55. West wind 5 to 10 mph, with gusts as high as 18 mph.
Wednesday
A 30 percent chance of showers after 11am. Partly sunny, with a high near 73.
Wednesday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 71.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 47.
Friday
A slight chance of showers before 11am. Mostly sunny, with a high near 72.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
A slight chance of showers. Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Union Gap WA
 46.56°N 120.47°W (Elev. 997 ft)
Last Update:
2:41 am PDT Aug 31, 2026
Forecast Valid:
3am PDT Aug 31, 2026-6pm PDT Sep 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation