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Rapid Valley, South Dakota 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Rapid Valley SD
National Weather Service Forecast for: Rapid Valley SD
Issued by: National Weather Service Rapid City, SD
Updated: 9:36 pm MDT Mar 30, 2025
 
Tonight

Tonight: A 30 percent chance of snow, mainly before midnight.  Patchy fog.  Otherwise, mostly cloudy, with a low around 26. Light and variable wind.
Chance Snow
and Patchy
Fog
Monday

Monday: Mostly cloudy, with a high near 44. Wind chill values as low as 20. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.
Mostly Cloudy
then Mostly
Cloudy and
Breezy
Monday
Night
Monday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 33. Southeast wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Chance
Showers

Tuesday

Tuesday: Rain likely, mainly after noon.  Cloudy, with a high near 46. Southeast wind 6 to 14 mph becoming northeast in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 70%.
Rain Likely

Tuesday
Night
Tuesday Night: Snow likely, possibly mixed with rain, becoming all snow after 10pm.  Mostly cloudy, with a low around 27. North wind 13 to 16 mph, with gusts as high as 29 mph.  Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Rain/Snow
Likely then
Snow Likely
Wednesday

Wednesday: Snow likely.  Mostly cloudy, with a high near 38. Breezy, with a north wind 17 to 24 mph, with gusts as high as 40 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Snow Likely
and Breezy

Wednesday
Night
Wednesday Night: A 30 percent chance of snow before midnight.  Mostly cloudy, with a low around 25. North wind 12 to 17 mph becoming light and variable  after midnight. Winds could gust as high as 30 mph.
Chance Snow
then Mostly
Cloudy
Thursday

Thursday: A slight chance of rain and snow showers between noon and 1pm, then a slight chance of rain showers after 1pm.  Partly sunny, with a high near 45. Light and variable wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Partly Sunny
then Slight
Chance
Rain/Snow
Thursday
Night
Thursday Night: A slight chance of rain showers before 7pm, then a slight chance of rain and snow showers between 7pm and 4am, then a slight chance of snow showers after 4am.  Mostly cloudy, with a low around 25.
Slight Chance
Rain/Snow

Lo 26 °F Hi 44 °F Lo 33 °F Hi 46 °F Lo 27 °F Hi 38 °F Lo 25 °F Hi 45 °F Lo 25 °F

Hazardous Weather Outlook
 

Tonight
 
A 30 percent chance of snow, mainly before midnight. Patchy fog. Otherwise, mostly cloudy, with a low around 26. Light and variable wind.
Monday
 
Mostly cloudy, with a high near 44. Wind chill values as low as 20. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.
Monday Night
 
A 50 percent chance of showers. Mostly cloudy, with a low around 33. Southeast wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Tuesday
 
Rain likely, mainly after noon. Cloudy, with a high near 46. Southeast wind 6 to 14 mph becoming northeast in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Tuesday Night
 
Snow likely, possibly mixed with rain, becoming all snow after 10pm. Mostly cloudy, with a low around 27. North wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Wednesday
 
Snow likely. Mostly cloudy, with a high near 38. Breezy, with a north wind 17 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
 
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 25. North wind 12 to 17 mph becoming light and variable after midnight. Winds could gust as high as 30 mph.
Thursday
 
A slight chance of rain and snow showers between noon and 1pm, then a slight chance of rain showers after 1pm. Partly sunny, with a high near 45. Light and variable wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
 
A slight chance of rain showers before 7pm, then a slight chance of rain and snow showers between 7pm and 4am, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 25.
Friday
 
A slight chance of snow showers before 8am, then a slight chance of rain and snow showers between 8am and noon, then a chance of rain showers after noon. Mostly sunny, with a high near 47.
Friday Night
 
A slight chance of rain and snow showers. Partly cloudy, with a low around 26.
Saturday
 
A slight chance of rain and snow showers. Mostly sunny, with a high near 51.
Saturday Night
 
Partly cloudy, with a low around 27.
Sunday
 
Sunny, with a high near 52.

 

Forecast from NOAA-NWS for Rapid Valley SD.

Weather Forecast Discussion
821
FXUS63 KUNR 302311
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
511 PM MDT Sun Mar 30 2025

.KEY MESSAGES...

-Light snow will continue into the evening over far western SD
 into Northeast WY, with little to no accumulation expected

-A series of disturbances will bring chances for rain/snow to the
 region through much of the week

-A stronger disturbance will bring a good chance of rain and snow
 to the region Tues, with snow accumulations possible Tues night

-Temperatures to remain mainly below seasonal norms through the
 week

&&

.DISCUSSION...(This Evening Through Sunday)
Issued at 149 PM MDT Sun Mar 30 2025

Potent Pac upper jet continues to support unsettled flow over the
Pac, bringing a series of impulses into the western CONUS. This
pattern will continue through the week, with several rounds of Pac
systems into the region. Weak impulse continues to move east
across the region today with another around of light snow moving
across northeast WY and far western SD. Light snow will move east
and diminish through evening, with little to no accums expected.
Cool and moist easterly upslope flow will continue overnight with
widespread low clouds. Patchy fog will also be possible along the
north and east slopes of the Black Hills. Deeper trough will move
into the western CONUS Monday and support increasing return flow
over the region. Gusty southeast winds will develop Monday with
some gusts over 40 mph possible across far NW SD. Temps will
struggle into 30s/40s given cloud cover and moist upslope flow,
with the warmest temps in western Campbell County where the BL
will mix out. Weak impulse will traverse the flow ahead of this
system with associated steep lapse rates and will support
scattered rain or snow showers over the western third. Isolate
thunderstorms will also be possible from northeast WY into far
southwest SD in the late afternoon and early evening. This area of
lift will support slightly better chances for mostly rain on the
SD Plains Monday night where pos theta-e adv will ensue. Some
freezing rain or snow will also be possible across NW SD a well,
hinging on how the thermal fields set up. The main/stronger wave
will push out of the Rockies Tue and support a good chance of rain
and snow over the region. Rain will change to snow Tue night with
some potential for concentrated banding per steep mid level
lapses rates and a strong FGEN signal. Low confidence remains per
details WRT this system, given poor model consensus and the fact
that snow amounts will likely be driven by mesoscale processes.
After Wed, things dry out with just some chances for showers at
times as semi-unsettled westerly flow continues. Temps will also
moderate some by the end of the week, but still remain around
seasonal norms.

&&

.AVIATION...(For the 00Z TAFS Through 00Z Monday Evening)
Issued At 509 PM MDT Sun Mar 30 2025

Light snow will slowly taper off through the evening hours, with
snow ending from west to east after 01-04z. Otherwise, lingering
low clouds and fog will result in MVFR to LIFR conditions through
the 10-12z, before gradual improvement is expected to transient
VFR and MVFR conditions Monday morning into the afternoon hours.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...None.
WY...None.
&&

$$

DISCUSSION/KEY MESSAGES...JC
AVIATION...SE
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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