Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

Lat: 46.37472°NLon: 117.01444°WElev: 1437.0ft.

Clear

46°F

8°C

Humidity	88%
Wind Speed	E 4 MPH
Barometer	29.62 in (1003.05 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Wind Chill	44°F (7°C)
Last update	25 Dec 12:56 PM PST

More Information:

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

Extended Forecast for

Clarkston WA

Christmas Day
High: 55 °F
Chance Rain
Tonight
Low: 41 °F
Chance Rain
then Rain
Likely
Friday
High: 50 °F
Rain
Friday Night
Low: 35 °F
Rain/Snow
Saturday
High: 41 °F
Chance Snow
then Mostly
Sunny
Saturday Night
Low: 28 °F
Partly Cloudy
Sunday
High: 40 °F
Mostly Sunny
Sunday Night
Low: 28 °F
Partly Cloudy
Monday
High: 42 °F
Partly Sunny

Detailed Forecast

Christmas Day

A 30 percent chance of rain. Mostly cloudy, with a high near 55. East wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight

A chance of rain before 10pm, then rain likely after 1am. Mostly cloudy, with a low around 41. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday

Rain. High near 50. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

Rain, possibly mixed with snow. Low around 35. West wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Saturday

A 30 percent chance of snow before 10am. Partly sunny, with a high near 41. West wind around 11 mph, with gusts as high as 22 mph. Little or no snow accumulation expected.

Saturday Night

Partly cloudy, with a low around 28.

Sunday

Mostly sunny, with a high near 40.

Sunday Night

Partly cloudy, with a low around 28.

Monday

Partly sunny, with a high near 42.

Monday Night

Mostly cloudy, with a low around 30.

Tuesday

Mostly cloudy, with a high near 45.