Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

36°F

2°C

Humidity	52%
Wind Speed	W 9 mph
Barometer	29.98 in
Dewpoint	19°F (-7°C)
Visibility	10.00 mi
Wind Chill	29°F (-2°C)
Last update	7 Dec 9:35 pm MST

More Information:

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

Extended Forecast for

Lead SD

Tonight
Low: 26 °F⇑
Mostly Cloudy
Monday
High: 39 °F
Mostly Sunny
Monday Night
Low: 33 °F⇑
Slight Chance
Snow then
Slight Chance
Rain/Snow
Tuesday
High: 44 °F⇓
Rain Likely
then
Rain/Snow
Likely and
Breezy
Tuesday Night
Low: 26 °F
Chance Snow
Wednesday
High: 37 °F
Snow then
Rain/Snow
Wednesday Night
Low: 21 °F
Rain/Snow
then Snow
Likely
Thursday
High: 27 °F
Snow Likely
Thursday Night
Low: 5 °F
Snow Likely

Detailed Forecast

Tonight

Mostly cloudy, with a temperature rising to around 32 by 4am. Wind chill values as low as 19. Calm wind becoming west 5 to 8 mph in the evening. Winds could gust as high as 23 mph.

Monday

Mostly sunny, with a high near 39. West wind 10 to 13 mph, with gusts as high as 31 mph.

Monday Night

A slight chance of snow before 1am, then a slight chance of rain and snow between 1am and 3am, then a slight chance of rain after 3am. Mostly cloudy, with a temperature falling to near 33 by 9pm, then rising to around 39 during the remainder of the night. West wind 10 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

Tuesday

Rain likely before 3pm, then snow likely. Partly sunny, with a temperature rising to near 44 by 11am, then falling to around 34 during the remainder of the day. Breezy, with a west wind 18 to 20 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Tuesday Night

A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 26. Northwest wind 9 to 18 mph, with gusts as high as 38 mph. New snow accumulation of less than a half inch possible.

Wednesday

Snow before 5pm, then rain and snow. High near 37. Southwest wind around 9 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Wednesday Night

Rain and snow, becoming all snow after 9pm. Low around 21. West wind 9 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 80%.

Thursday

Snow likely, mainly before 11am. Mostly cloudy, with a high near 27. Northwest wind 6 to 10 mph, with gusts as high as 26 mph.

Thursday Night

Snow likely. Mostly cloudy, with a low around 5.

Friday

A chance of snow. Mostly cloudy, with a high near 15.

Friday Night

A chance of snow. Mostly cloudy, with a low around 7.

Saturday

A slight chance of snow. Partly sunny, with a high near 31.