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Fort Pierre, South Dakota 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Fort Pierre SD
National Weather Service Forecast for: Fort Pierre SD
Issued by: National Weather Service Aberdeen, SD
Updated: 10:45 pm CDT Jun 6, 2025
 
Tonight

Tonight: Mostly clear, with a low around 50. Southeast wind 3 to 5 mph.
Mostly Clear

Saturday

Saturday: Sunny, with a high near 85. South wind 5 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.
Sunny

Saturday
Night
Saturday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 52. West northwest wind 9 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers
Sunday

Sunday: Sunny, with a high near 75. Breezy, with a west northwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.
Sunny and
Breezy

Sunday
Night
Sunday Night: Mostly clear, with a low around 50. Breezy, with a northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 33 mph.
Mostly Clear
and Breezy
then Mostly
Clear
Monday

Monday: Mostly sunny, with a high near 74. Breezy, with a north northwest wind 13 to 21 mph, with gusts as high as 30 mph.
Mostly Sunny
and Breezy

Monday
Night
Monday Night: Mostly clear, with a low around 49. North northwest wind 9 to 14 mph becoming light and variable  after midnight. Winds could gust as high as 22 mph.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 85. Light west southwest wind becoming south 5 to 9 mph in the morning.
Sunny

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 58. South wind 8 to 10 mph.
Mostly Clear

Lo 50 °F Hi 85 °F Lo 52 °F Hi 75 °F Lo 50 °F Hi 74 °F Lo 49 °F Hi 85 °F Lo 58 °F

 

Tonight
 
Mostly clear, with a low around 50. Southeast wind 3 to 5 mph.
Saturday
 
Sunny, with a high near 85. South wind 5 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
 
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 52. West northwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
 
Sunny, with a high near 75. Breezy, with a west northwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.
Sunday Night
 
Mostly clear, with a low around 50. Breezy, with a northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 33 mph.
Monday
 
Mostly sunny, with a high near 74. Breezy, with a north northwest wind 13 to 21 mph, with gusts as high as 30 mph.
Monday Night
 
Mostly clear, with a low around 49. North northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Tuesday
 
Sunny, with a high near 85. Light west southwest wind becoming south 5 to 9 mph in the morning.
Tuesday Night
 
Mostly clear, with a low around 58. South wind 8 to 10 mph.
Wednesday
 
Mostly sunny and hot, with a high near 92.
Wednesday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Thursday
 
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
Thursday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Friday
 
A slight chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Fort Pierre SD.

Weather Forecast Discussion
806
FXUS63 KUNR 062321
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
521 PM MDT Fri Jun 6 2025

.KEY MESSAGES...

- Showers and thunderstorms mainly focused over the Black Hills
  diminishing this evening

- Showers and thunderstorms Saturday afternoon with some strong
  wind gust potential in northern/central South Dakota

- Windy Sunday

- Warming trend mid-week with increasing thunderstorm chances and
  potential severe storms late next week

&&

.DISCUSSION...(This Evening Through Friday)
Issued at 110 PM MDT Fri Jun 6 2025

Water vapor channel satellite imagery shows an upper level trough
moving eastward across Wyoming early this afternoon. Flow is
noticeably stronger at tropopause/jet level, with a distinct PV
anomaly in the models. Lower tropospheric flow is quite weak.

There are two precipitation regimes ongoing today: 1) weak
convection rooted in the mid levels and resultant light
precipitation amounts that has been ongoing from central/southern
Wyoming eastward into Nebraska and far southern South Dakota, 2)
diurnal convection focused within elevated heating regime in the
Black Hills. The latter may have sufficient depth for some charge
separation and lightning later this afternoon, but weak
instability and insufficient low-mid tropospheric flow/shear will
likely limit organization and intensity and convective hazards
beyond lightning. Convection may struggle to maintain east of the
Black Hills as cloud layer flow is weak.

A deepening midlevel trough to our north will force a weakly
baroclinic front through our area tomorrow afternoon. The post-
frontal air mass per model guidance will be slightly more moist,
contributing to a shallow layer of instability atop a deep well
mixed PBL. This should support isolated to scattered diurnal
convection with some potential for strong wind gusts with the more
intense convective cells given the deep PBL mixing. Strengthening
tropospheric flow will support faster storm motions compared to
today (southeasterly at 40-45 mph). There is a low probability of
damaging wind gusts, mainly across roughly the northeast third of
the forecast area where instability is modest but potentially
sufficient mid-afternoon through early evening. The primary
convective threat will be lightning, however.

On Sunday, pressure gradient will be tight between positive MSLP
anomalies in the lee of the Rockies and and trough/surface low to
our east. Coupled with deep diurnal mixing, windy conditions with
gusts to 40-50 mph are expected especially east of the Black
Hills.

Western ridging and associated positive midlevel height anomalies
will migrate eastward across the west and central part of the
country through the week, bringing a warming trend for our region.
Temperatures by Tuesday and Wednesday will rise to at least 10-15
degrees above normal for this time of year. Convection in the
Black Hills due to elevated heating will re-emerge possibly with
the diurnal cycle Tuesday, and more likely Wednesday, as modest
low level moisture return occurs.

Model ensemble spread grows some by the latter part of next week
(Thursday-Friday), though the broader synoptic signal of
increased troughing in the west and somewhat perturbed
southwesterly flow over our region is consistent among the model
suite. Low end severe thunderstorm probabilities exist in the
ensemble-driven CSU machine learning system during this period.
Most models do show instability/shear parameter space favorable
for organized intense convection, with some forcing from upstream
trough.

Early indications for the Day 8-14 period are for above normal
temperatures and near normal precipitation. There is a range of
possibilities in the ensembles at that time range (as is typical),
but a general trend toward retrograding/amplifying ridging over
the area with a progressive pattern still and associated periodic
opportunities for convection.

&&

.AVIATION...(For the 00Z TAFS Through 00Z Saturday Evening)
Issued At 521 PM MDT Fri Jun 6 2025

SHRA/TSRA and associated localized MVFR/IFR conditions are
expected to gradually diminish through 06z. Thereafter, VFR
conditions should prevail through 18z. After 18z, additional
SHRA/TSRA may develop from north to south, with MVFR/IFR
conditions not out of the question. Breezy northwest winds will
develop from north to south beginning around 15z, with gusts to
around 40 kt possible 18-00z across northwestern SD.

&&

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

$$

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






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