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 >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

6 Miles WSW Watertown SD

Dense Fog Advisory until December 25, 10:00am

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory until December 25, 10:00am
NOW until 10:00am Thu
Dense Fog Advisory
Overnight
Low: 20 °F
Areas Dense
Freezing Fog
Christmas Day
High: 40 °F
Dense
Freezing Fog
then Cloudy
Thursday Night
Low: 27 °F
Mostly Cloudy
then Fog
Friday
High: 38 °F
Patchy Fog
then Mostly
Sunny
Friday Night
Low: 31 °F
Mostly Cloudy
Saturday
High: 46 °F
Mostly Sunny
Saturday Night
Low: 10 °F
Mostly Cloudy
then Slight
Chance Snow
and Blustery
Sunday
High: 15 °F
Blustery.
Slight Chance
Snow then
Mostly Cloudy

Detailed Forecast

Overnight

Areas of dense freezing fog. Mostly cloudy, with a low around 20. East southeast wind around 8 mph.

Christmas Day

Widespread dense freezing fog before noon. Cloudy, with a high near 40. South wind 9 to 17 mph, with gusts as high as 29 mph.

Thursday Night

Widespread fog, mainly before 4am. Otherwise, mostly cloudy, with a low around 27. South wind 6 to 13 mph becoming northwest after midnight. Winds could gust as high as 25 mph.

Friday

Patchy fog between 8am and 10am. Otherwise, mostly sunny, with a high near 38. North northwest wind 5 to 7 mph becoming south southeast in the afternoon.

Friday Night

Mostly cloudy, with a low around 31. South southeast wind 7 to 10 mph.

Saturday

Mostly sunny, with a high near 46. South wind around 10 mph becoming northwest in the afternoon.

Saturday Night

A slight chance of snow after midnight. Mostly cloudy, with a low around 10. Blustery, with a north northwest wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 20%.

Sunday

A slight chance of snow before noon. Mostly cloudy, with a high near 15. Blustery, with a northwest wind 22 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.

Sunday Night

Mostly cloudy, with a low around 0. Blustery, with a northwest wind 15 to 23 mph, with gusts as high as 37 mph.

Monday

Sunny, with a high near 15.

Monday Night

Mostly cloudy, with a low around 6.

Tuesday

Partly sunny, with a high near 34.

Tuesday Night

Mostly cloudy, with a low around 12.

Wednesday

Partly sunny, with a high near 24.