National Weather Service

News Headlines

Soliciting feedback on the Experimental Probabilistic Quantitative Precipitation Forecast (PQPF) Webpages through November 21, 2025

Current conditions at

Mt. St. Helens - Coldwater (MSH33)

Lat: 46.30333°NLon: 122.26503°WElev: 3260.0ft.

N/A

Humidity	84%
Wind Speed	NNE 0 MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	30 Aug 07:00 PM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles SW Mount St Helens WA

Tonight
Low: 53 °F
Mostly Cloudy
then Rain
Likely
Sunday
High: 53 °F
Showers then
Showers
Likely
Sunday Night
Low: 43 °F
Slight Chance
Showers
Monday
High: 62 °F
Sunny
Monday Night
Low: 53 °F
Clear and
Breezy
Tuesday
High: 71 °F
Sunny and
Breezy
Tuesday Night
Low: 53 °F
Clear
Wednesday
High: 60 °F
Slight Chance
Showers
Wednesday Night
Low: 47 °F
Chance
Showers

Detailed Forecast

Tonight

Rain likely, mainly after 4am. Increasing clouds, with a steady temperature around 53. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Sunday

Showers, mainly before 1pm. High near 53. South wind around 7 mph becoming west northwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

A 20 percent chance of showers. Partly cloudy, with a low around 43. West northwest wind 5 to 7 mph.

Monday

Sunny, with a high near 62. North northwest wind around 5 mph becoming calm in the morning.

Monday Night

Clear, with a low around 53. Breezy, with a light and variable wind becoming east 11 to 16 mph after midnight. Winds could gust as high as 24 mph.

Tuesday

Sunny, with a high near 71. Breezy.

Tuesday Night

Clear, with a low around 53.

Wednesday

A slight chance of showers. Mostly sunny, with a high near 60.