Dakota Dunes, South Dakota 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for 2 Miles S North Sioux City SD
National Weather Service Forecast for:
2 Miles S North Sioux City SD
Issued by: National Weather Service Sioux Falls, SD |
Updated: 6:46 am CDT Jun 27, 2025 |
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Today
 Patchy Fog then Sunny
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Tonight
 Chance T-storms
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Saturday
 Mostly Sunny then Slight Chance Showers
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Saturday Night
 Chance T-storms
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Sunday
 Slight Chance T-storms then Chance Showers
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Sunday Night
 Chance T-storms then Chance Showers
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Monday
 Sunny
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Monday Night
 Mostly Clear
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Tuesday
 Mostly Sunny
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Hi 86 °F |
Lo 68 °F |
Hi 93 °F |
Lo 70 °F |
Hi 89 °F |
Lo 64 °F |
Hi 86 °F |
Lo 61 °F |
Hi 86 °F |
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Hazardous Weather Outlook
Today
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Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 86. Light east southeast wind becoming south southeast 5 to 10 mph in the afternoon. |
Tonight
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A 30 percent chance of showers and thunderstorms, mainly before midnight. Increasing clouds, with a low around 68. Southeast wind around 10 mph. |
Saturday
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A 20 percent chance of showers after 4pm. Sunny, with a high near 93. Heat index values as high as 103. South wind 10 to 15 mph, with gusts as high as 25 mph. |
Saturday Night
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A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind 5 to 10 mph, with gusts as high as 20 mph. |
Sunday
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A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. South wind 5 to 10 mph becoming north in the morning. |
Sunday Night
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A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 64. North northeast wind 5 to 10 mph. |
Monday
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Sunny, with a high near 86. |
Monday Night
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Mostly clear, with a low around 61. |
Tuesday
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Mostly sunny, with a high near 86. |
Tuesday Night
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Partly cloudy, with a low around 62. |
Wednesday
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A 30 percent chance of showers. Mostly sunny, with a high near 87. |
Wednesday Night
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A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. |
Thursday
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A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. |
Forecast from NOAA-NWS
for 2 Miles S North Sioux City SD.
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Weather Forecast Discussion
880
FXUS63 KUNR 271119
AFDUNR
Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
519 AM MDT Fri Jun 27 2025
.KEY MESSAGES...
- There is a slight risk (level 2 of 5) for severe thunderstorms
this afternoon and evening, mainly east of the Black Hills. Main
hazards will be large hail (quarter size or larger) and
damaging wind gusts.
- Hotter temperatures are expected today, with highs climbing into
the 90s for most.
- Heat shifts east on Saturday, with widespread showers and
thunderstorms anticipated late Saturday into Sunday.
&&
.DISCUSSION...(Today Through Thursday)
Issued at 217 AM MDT Fri Jun 27 2025
Water vapor imagery tonight shows brought, modest troughing and
associated enhanced deep moisture over much of the western CONUS. An
embedded upper low center is evident near the WA/BC border, with an
attendant disturbance extending into the northern Rockies. Closer to
home, a cluster of storms continues to shift eastward across
northwestern SD. Though largely elevated, occasional gusts of 40-50
mph have been observed within and behind this convection, and
subsevere hail likely accompanies the strongest cores. This activity
is supported by low-level warm air advection and convergence near
the nose of a 30-35 kt low-level jet focused over the NE panhandle,
per latest SPC mesoanalysis. The strongest activity will likely
traverse Ziebach County later in the overnight/very early morning
before departing the area and gradually weakening as the low-level
jet diminishes. Outside of the storms, it`s a pleasant night, with
locally warm temperatures (lower 70s) in locations such as Newcastle
and Edgemont owing to easterly downslope winds.
Midlevel trof and associated speed max, along with attendant low-
level trof, cross the region this afternoon and evening. Most
favorable environment for explosive convection capable of severe
hazards continues to be projected to remain east of the Black Hills
and largely east of our area. 00z HREF mean SBCAPE of 2-3+ kJ/kg
coupled with 0-6 km shear vector magnitudes of 30-40 kt are present
from central NE northward thru central SD by late morning,
expanding/shifting northeastward with time thru the afternoon. Dry
midlevel air will translate to deep, well-mixed boundary layers and
high LCLs over much of the area, which will limit tornado potential
outside of our far eastern tier (i.e., around Dupree to Winner).
However, the high LCLs may increase the potential for damaging
winds. Similarly, relatively modest low-level shear will further
limit tornado potential, but hodographs look favorable for very
large hail formation. Altogether, the primary hazards over most of
the area will be large to giant hail and damaging winds, potentially
locally significant. The time frame of the primary severe threat
will be fairly limited--from around 20z thru 04z or so. However, a
secondary weak disturbance moving through zonal/slightly
southwesterly flow aloft later in the evening may support additional
shower/storm activity contingent on evolution of convection earlier
in the day.
Surface trof slowly shifts eastward tomorrow night thru early
Saturday, effectively stalling over the region just south of our
area. Low-level north/northeast flow should allow for moisture
recovery in the wake of today`s convection. As an upper jet streak
passes north of the area, Q-vector convergence associated with the
right entrance region should promote ascent over the lingering
baroclinic zone late Saturday into Saturday night, leading to
widespread shower and thunderstorm activity. Compared to tomorrow,
CAPE will generally be lower, but shear will be improved, especially
across our western zones. As such, it will be another day to watch
for potential severe hazards. Low-level shear remains very weak, so
primary threats will be hail and wind. Storm chances continue into
Sunday as a more notable midlevel trof is carved out over the north
central CONUS. Though not currently in the SPC Convective Outlook
for Sunday, some longer duration CAMs do suggest a favorable
environment for severe across southwestern and south central SD by
Sunday afternoon.
Southeast to northwest oriented ridging builds over the
Plains/Rockies on Monday in the wake of the aforementioned trof.
Rising heights at all levels on Monday will likely limit convective
activity; however, northwest flow aloft and increasing CAPE from
Tuesday onward should support at least isolated convection each day,
some of which could be severe. Relatively mild temps on Sunday will
also give way to warmer/hotter conditions as height/thermal ridging
extend into the region.
&&
.AVIATION...(For the 12Z TAFS Through 12Z Saturday Morning)
Issued At 519 AM MDT Fri Jun 27 2025
Localized MVFR/IFR conditions in ISO/SCT SHRA/TSRA from
northwestern SD thru south central SD will persist thru
approximately 15z before this activity diminishes. Outside of the
SHRA/TSRA, areas of fog/low stratus are contributing to MVFR/IFR
conditions in the same region, along with the foothills/plains
along the eastern and northern/northwestern periphery of the Black
Hills. Conditions areawide should improve to VFR by around 15z.
After 18z, and likely closer to 21z, ISO TSRA are expected to
develop over portions of western SD and central SD. In addition to
localized IFR/LIFR conditions, the strongest storms will be
capable of hail of quarter sized or larger and erratic wind gusts
in excess of 50 kt. Much of this TSRA activity will diminish by
06z, though storms could linger across northwestern SD thru the
period.
&&
.UNR WATCHES/WARNINGS/ADVISORIES...
SD...None.
WY...None.
&&
$$
DISCUSSION/KEY MESSAGES...Sherburn
AVIATION...Sherburn
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