Severe Thunderstorms and Heavy Rainfall Across the South; Heat Spreads Across the West and Southern Plains

A couple of frontal boundaries will move east and south from the Plains to the Gulf and Atlantic coastlines. These boundaries will focus showers and thunderstorms through the weekend, with scattered severe thunderstorms from the Southern Plains and across the Gulf Coast states. Locally heavy rainfall may also occur, which may be welcome news across drought areas. Meanwhile, heat spreads westward. Read More >

Current conditions at

Southwest Washington Regional Airport (KKLS)

Lat: 46.11553° N Lon: 122.89273° W Elev: 13.0 ft.

Clear

55°F

13°C

Humidity 87%
Wind Speed NNW 3 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 10 May 12:35 AM PDT
Detailed forecast for

Cowlitz County Lowlands

Overnight
Mostly cloudy. Patchy fog. Lows around 50. Winds light.
Sunday
Mostly cloudy in the morning, then becoming mostly sunny. Highs around 70. West wind 5 to 10 mph.
Sunday Night
Mostly clear in the evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Monday
Mostly cloudy in the morning, then clearing. Highs in the upper 70s. North wind 5 to 10 mph.
Monday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s. North wind 5 to 10 mph.
Tuesday
Mostly sunny. Highs in the mid 80s.
Tuesday Night
Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain with a slight chance of thunderstorms. Lows in the lower 50s. Chance of rain 30 percent.
Wednesday
Mostly cloudy in the morning, then becoming mostly sunny. A 30 percent chance of rain. Highs in the mid 70s.
Wednesday Night
Partly cloudy. Lows in the upper 40s.
Thursday
Partly sunny with a 30 percent chance of rain. Highs around 70.
Thursday Night
Mostly cloudy with a 20 percent chance of rain. Lows in the mid 40s.
Friday
Partly sunny with a 20 percent chance of rain. Highs in the upper 60s.
Friday Night
Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of rain. Lows in the mid 40s.
Saturday
Partly sunny with a 40 percent chance of rain. Highs in the upper 60s.



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1132 PM PDT Sat May 9 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database