Dell Rapids, South Dakota 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Dell Rapids SD
National Weather Service Forecast for:
Dell Rapids SD
Issued by: National Weather Service Sioux Falls, SD |
Updated: 6:28 am CDT Aug 11, 2025 |
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Today
 Areas Smoke
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Tonight
 Chance Sprinkles
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Tuesday
 Sunny
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Tuesday Night
 Clear
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Wednesday
 Sunny
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Wednesday Night
 Partly Cloudy then Slight Chance T-storms
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Thursday
 Mostly Sunny
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Thursday Night
 Partly Cloudy
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Friday
 Mostly Sunny
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Hi 83 °F |
Lo 62 °F |
Hi 79 °F |
Lo 56 °F |
Hi 82 °F |
Lo 67 °F |
Hi 88 °F |
Lo 70 °F |
Hi 90 °F |
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Hazardous Weather Outlook
Today
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Areas of smoke. Mostly sunny, with a high near 83. Light south wind becoming southwest 5 to 10 mph in the morning. |
Tonight
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A chance of sprinkles between 2am and 4am. Areas of smoke between 8pm and 2am. Mostly clear, with a low around 62. South wind 5 to 10 mph. |
Tuesday
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Sunny, with a high near 79. Northwest wind 5 to 10 mph. |
Tuesday Night
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Clear, with a low around 56. North northwest wind around 5 mph becoming calm in the evening. |
Wednesday
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Sunny, with a high near 82. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph. |
Wednesday Night
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A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. South southeast wind around 15 mph, with gusts as high as 20 mph. |
Thursday
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Mostly sunny, with a high near 88. |
Thursday Night
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Partly cloudy, with a low around 70. |
Friday
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Mostly sunny, with a high near 90. |
Friday Night
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A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. |
Saturday
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Mostly sunny, with a high near 85. |
Saturday Night
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A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. |
Sunday
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Mostly sunny, with a high near 85. |
Forecast from NOAA-NWS
for Dell Rapids SD.
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Weather Forecast Discussion
627
FXUS63 KFSD 111133
AFDFSD
Area Forecast Discussion
National Weather Service Sioux Falls SD
633 AM CDT Mon Aug 11 2025
.KEY MESSAGES...
- Areas of smoke, surface and aloft, will create hazy skies with
occasional impacts to air quality through early Tuesday. Minor
visibility reductions are also possible at times.
- Wednesday night into Thursday morning may bring a few
thunderstorms to areas north of I-90, with the better chance
closer to highway 14. Severe weather risks are low.
- Thursday into Saturday will see increased temperatures and dew
points return, with Moderate/locally Major Heat Risk. Highs in
the upper 80s to mid 90s and dew points in the 70s may result
in 100+ degree heat indices for some locations.
- Although uncertainty remains in details, thunderstorm chances
return late week into this weekend. Pattern favors nighttime
to early morning thunderstorms, with locally heavy rain and
perhaps some severe storms possible.
&&
.DISCUSSION...
Issued at 408 AM CDT Mon Aug 11 2025
TODAY-TUESDAY: Main concern early this week will be another
round of wildfire smoke which has filtered into the northern
Plains from Canada. Latest HRRR/RRFS projections hang onto areas
of smoke both aloft and at the surface through today, slowly
exiting east tonight through Tuesday morning as a weak cool
front pushes through the forecast area. Aside from shallow fog
which is also reducing visibility early this morning, expect
area visibility reports in the 3-5 mile range are generally from
the surface smoke with air quality readings largely in the
yellow to orange range (Moderate to Unhealthy for Sensitive
Groups) as of 3 am. However, upstream air quality observations
in central-northeast SD/western ND are in the red (Unhealthy)
category, and will have to watch for worsening air quality and
perhaps visibility as we move through the morning.
Other than the smoke, today and Tuesday look to be relatively
nice days with modest humidity levels for this time of year and
temperatures near to slightly below normal. A subtle wave may
produce some sprinkles north of I-90 late this afternoon/evening
but most areas should remain dry.
WEDNESDAY-THURSDAY: Rising heights aloft and increasing south
winds in the low levels will allow warmer air to slowly build
into the region midweek. Still seasonal high temperatures in the
80s Wednesday will warm into the mid 80s to mid 90s by Thursday,
accompanied by some increase in low level humidity as well. The
combination of warmer temperatures and higher dew points may
push heat indices above 100F in some areas Thursday afternoon,
so will have to monitor trends for possible heat headlines.
Placement of the mid-level thermal ridge should keep rain chances
largely north of the area, though a modest wave seen in several
model solutions could brush our northern counties with some
storms Wednesday night into early Thursday. At this time, the
greater risk for a few strong-severe storms looks to remain
north of our forecast area, but if the wave tracks a bit farther
south we will have to monitor potential into the Highway 14
corridor Wednesday night.
FRIDAY-SUNDAY: The heat peaks Friday, with a transition to
southwest flow aloft potentially bringing us back into a more
active pattern by Friday night into the weekend. Seasonably
warm temperatures and abundant low level humidity will fuel
ample instability, but similar to this past weekend, mid level
temperatures may be too warm to allow convective development in
our area during peak heating. Instead, could more likely see
development to our west move east into our forecast area during
the nighttime to early morning hours. Still several days away,
so details regarding storm location and severe potential are
uncertain. However, ensembles show precipitable water values
increasing above the 90th percentile of climatology with a
potential southerly low level jet through eastern Nebraska,
which could support at least a locally heavy rain threat.
&&
.AVIATION /12Z TAFS THROUGH 12Z TUESDAY/...
Issued at 630 AM CDT Mon Aug 11 2025
Areas of MVFR visibility into at least this evening due to a
deep layer of wildfire smoke blanketing the Dakotas/Minnesota.
Confidence in timing MVFR conditions at TAF sites is low, so
have maintained VFR/6SM visibility for now, but possible that
visibility may dip to 4-5SM at times during the day.
Smoke is expected to shift east after 12/00Z with improving
conditions through the latter half of this TAF period. Locations
north of I-90 may see some mid-level clouds and spotty sprinkles
in the very late afternoon/evening, but no significant aviation
impacts are expected.
&&
.FSD WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...None.
IA...None.
NE...None.
&&
$$
DISCUSSION...JH
AVIATION...JH
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