Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Southwest Washington Regional Airport (KKLS)

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

Overcast

50°F

10°C

Humidity 81%
Wind Speed WNW 5 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 13 Apr 10:20 AM PDT
Detailed forecast for

Cowlitz County Lowlands

Today
Mostly cloudy with showers likely this morning, then partly sunny with a chance of showers this afternoon. Highs in the mid 50s. West wind 5 to 10 mph. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Tonight
Mostly cloudy. A slight chance of rain showers in the evening, then rain likely after midnight. Lows in the lower 40s. West wind 5 to 10 mph, becoming light after midnight. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Tuesday
Rain. Highs in the lower 50s. South wind 10 to 15 mph. Chance of rain near 100 percent. Rainfall amounts a tenth to a half of an inch.
Tuesday Night
Rain. Lows in the upper 30s. South wind 10 to 15 mph, becoming west 5 to 10 mph after midnight. Chance of rain near 100 percent.
Wednesday
Rain likely in the morning, then rain with a slight chance of thunderstorms in the afternoon. Highs in the lower 50s. West wind 5 to 10 mph. Chance of rain near 100 percent.
Wednesday Night
Mostly cloudy with rain. Lows in the mid 30s. Chance of rain 80 percent.
Thursday
Partly sunny with a 50 percent chance of rain. Highs in the mid 50s.
Thursday Night
Partly cloudy. Lows in the upper 30s.
Friday
Mostly cloudy in the morning, then becoming partly sunny. Highs around 60.
Friday Night
Mostly cloudy. Lows in the upper 30s.
Saturday
Partly sunny. Highs in the mid 60s.
Saturday Night
Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s.
Sunday
Rain likely. Highs in the lower 60s. Chance of rain 60 percent.



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502 AM PDT Mon Apr 13 2026
 
 

Additional Resources

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