Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Hazardous Weather Conditions

Frost Advisory in effect from May 20, 12:00 AM MDT until May 20, 08:00 AM MDT

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

54°F

12°C

Humidity	41%
Wind Speed	E 10 mph
Barometer	30.17 in
Dewpoint	30°F (-1°C)
Visibility	10.00 mi
Wind Chill	51°F (11°C)
Last update	19 May 7:15 pm MDT

More Information:

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

Extended Forecast for

5 Miles N Fruitdale SD

Frost Advisory May 20, 12:00am until May 20, 08:00am

Click here for hazard details and duration

Frost Advisory

Tonight
Low: 33 °F
Mostly Clear
then Frost
Wednesday
High: 70 °F
Areas Frost
then Slight
Chance
T-storms
Wednesday Night
Low: 38 °F
Slight Chance
T-storms then
Partly Cloudy
Thursday
High: 67 °F
Partly Sunny
then Chance
Showers
Thursday Night
Low: 40 °F
Showers
Likely
Friday
High: 66 °F
Chance
Showers
Friday Night
Low: 39 °F
Partly Cloudy
Saturday
High: 75 °F
Mostly Sunny
Saturday Night
Low: 44 °F
Mostly Clear

Detailed Forecast

Tonight

Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 33. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.

Wednesday

A 20 percent chance of showers and thunderstorms after noon. Areas of frost before 7am. Otherwise, mostly sunny, with a high near 70. Southeast wind 5 to 14 mph, with gusts as high as 26 mph.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 38. Southeast wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.

Thursday

A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 67. Light and variable wind becoming northeast 12 to 17 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

Thursday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 40. North wind 13 to 18 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

Friday

A 30 percent chance of showers, mainly before noon. Partly sunny, with a high near 66. Northwest wind around 14 mph, with gusts as high as 22 mph.

Friday Night

Partly cloudy, with a low around 39.

Saturday

Mostly sunny, with a high near 75.

Saturday Night

Mostly clear, with a low around 44.

Sunday

Sunny, with a high near 85.

Sunday Night

Mostly clear, with a low around 48.