Sisseton, South Dakota 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Sisseton SD
National Weather Service Forecast for:
Sisseton SD
Issued by: National Weather Service Aberdeen, SD |
Updated: 4:45 am CDT Jun 6, 2025 |
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Overnight
 Slight Chance Showers
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Friday
 Chance Showers and Patchy Fog then Slight Chance T-storms
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Friday Night
 Mostly Cloudy then Patchy Fog
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Saturday
 Patchy Fog then Slight Chance Showers
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Saturday Night
 Showers
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Sunday
 Breezy. Sunny then Chance Showers
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Sunday Night
 Chance Showers and Breezy
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Monday
 Chance Showers and Breezy
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Monday Night
 Partly Cloudy
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Lo 53 °F |
Hi 70 °F |
Lo 55 °F |
Hi 78 °F |
Lo 52 °F |
Hi 70 °F |
Lo 49 °F |
Hi 66 °F |
Lo 50 °F |
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Overnight
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A slight chance of showers. Cloudy, with a low around 53. Calm wind. Chance of precipitation is 20%. |
Friday
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A chance of showers before 11am, then a slight chance of showers and thunderstorms after 4pm. Patchy fog between 7am and 8am. Otherwise, cloudy, with a high near 70. Light and variable wind becoming east southeast 5 to 7 mph in the morning. Chance of precipitation is 40%. |
Friday Night
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Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 55. South wind around 6 mph. |
Saturday
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A slight chance of showers after noon. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 78. South southwest wind 6 to 13 mph. Chance of precipitation is 20%. |
Saturday Night
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Showers and thunderstorms before 10pm, then showers between 10pm and 1am. Low around 52. Southwest wind around 14 mph becoming west northwest in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Sunday
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A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly sunny, with a high near 70. Breezy, with a west northwest wind 15 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 30%. |
Sunday Night
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A chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 49. Breezy, with a west northwest wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. |
Monday
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A chance of showers and thunderstorms. Mostly cloudy, with a high near 66. Breezy, with a northwest wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. |
Monday Night
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Partly cloudy, with a low around 50. West northwest wind 7 to 17 mph, with gusts as high as 26 mph. |
Tuesday
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Sunny, with a high near 78. |
Tuesday Night
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Mostly clear, with a low around 56. |
Wednesday
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Sunny, with a high near 85. |
Wednesday Night
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A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 40%. |
Thursday
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A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 40%. |
Forecast from NOAA-NWS
for Sisseton SD.
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Weather Forecast Discussion
239
FXUS63 KABR 060827
AFDABR
Area Forecast Discussion
National Weather Service Aberdeen SD
327 AM CDT Fri Jun 6 2025
.KEY MESSAGES...
- A cold front will bring a 40 to 70% chance of thunderstorms
Saturday afternoon/evening, highest east of the Missouri River.
There is a marginal risk (1/5) for severe weather north of Hwy 14.
- Warming trend by the middle of next week, with widespread 80s for
high temperatures by Wednesday. Although, 90s not out of the
question.
&&
.SHORT TERM /TODAY THROUGH SATURDAY AFTERNOON/...
Issued at 327 AM CDT Fri Jun 6 2025
Light rain continues to move across the eastern cwa early this
morning in a mid level wave of low pressure. Shortwave energy
traverses the nearly zonal flow through this afternoon. Along with
weak low pressure at 850 mb, the light rain converts more to showers
and lingers across the east. West of the light rain, fog and stratus
have developed. Areas west river are most likely to have vsby
reduced to a mile or less this morning, especially across Corson
county. Any fog is expected to mix out not long after sunrise.
South to southwest flow inreases Saturday morning ahead of a cold
front slated to move through in the afternoon. With the good
southerly mixing, high temps will pop up into the 80s along and west
of the James valley. There is shear but limited CAPE with this
front. Some thunderstorms could develop along the front by 21z in
north central SD and move east. There is a marginal risk for severe
storms with this system north of Hwy 14, but any activity looks very
isolated given the lack of instability/forcing anywhere but along
the front. Best chances may occur closer to 0z around the James
valley as a weak inverted trough nudges up into the valley and
shortwave activity increases aloft. This increased potential
revolves around a very narrow, low confidence fropa time frame,
though. By 3z, the area is post-frontal with lingering showers and
an upper trough that will usher cooler air back in to the region.
&&
.LONG TERM /SATURDAY EVENING THROUGH THURSDAY/...
Issued at 327 AM CDT Fri Jun 6 2025
The long term portion of the forecast begins with an upper level
trough over Manitoba, with a surface cold front sliding across the
CWA. Showers and thunderstorms will accompany the front early in the
forecast period. The upper level trough will be slow to exit the
region, with cooler temperatures expected on Sunday and Monday.
Highs on Monday may only reach the low to mid 60s across eastern SD
and western MN, or 10 to 15 degrees below average for this time of
year. The upper level trough will also bring periods of showers and
thunderstorms both days over the eastern half of the CWA.
By Tuesday afternoon, the upper level trough pushes east over the
Great Lakes Region with northwesterly flow aloft over the Northern
Plains. Warmer air will move into the area with highs rebounding to
near to above average with temperatures in the mid 70s, to the mid
80s. The warm temperatures should remain over the area through the
rest of the forecast period.
Precipitation chances Wednesday through Friday across the forecast
area are more problematic. On Wednesday, an area of low pressure
settles over western South Dakota with a warm front lifting
northward across eastern South Dakota starting Wednesday night.
Showers and thunderstorms may develop along the frontal boundary. On
Thursday, the surface low pressure may still be located over western
SD, with the warm front in ND. Shortwave energy should aide in
convective development Thursday afternoon, with storms progressing
through the CWA Thursday night. The overall pattern later next week
is conducive for severe weather somewhere across the Northern
Plains.
&&
.AVIATION /06Z TAFS THROUGH 06Z FRIDAY/...
Issued at 1121 PM CDT Thu Jun 5 2025
Terminals KABR,KATY,KPIR,KMBG
Rain continues to migrate northeast across the CWA, with impacts
at that include MVFR VISBY and CIGS, albeit intermittently. We do
anticipate as we move through the TAF period, widespread lowering
CIGS to MVFR and possibly IFR and for KMBG and possibly KPIR a
drop in visibility due to fog to MVFR/IFR.
&&
.ABR WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...None.
&&
$$
SHORT TERM...20
LONG TERM...SD
AVIATION...07
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