Yankton County, SD Weather Forecast
County weather hub
Chance Rain Showers then Mostly Sunny
Compare major city weather across Yankton County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers between 11am and noon. Mostly sunny, with a high near 95. East northeast wind 5 to 15 mph.
County Weather Overview
This county weather page brings together forecast coverage for Yankton County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Yankton County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 18 to Jul 24, 2026
- Latest sync
- Jul 18, 2026 9:24 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Yankton County
Monday looks like the warmest upcoming period in Yankton County at 103 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 20 mph NNW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 18, 2026 9:24 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KFSD
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 69. East wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly sunny, with a high near 98. Heat index values as high as 102. Southeast wind around 10 mph.
Mostly clear, with a low around 78. Heat index values as high as 103. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny, with a high near 103. West wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly clear, with a low around 70. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly sunny, with a high near 89.
Mostly clear, with a low around 61.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 83.
A slight chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64.
A slight chance of showers and thunderstorms before 7am. Partly sunny, with a high near 88.
Partly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 18
|
Chance Rain Showers then Mostly Sunny
|
95°F |
5 to 15 mph
ENE
|
|
Tonight
Jul 18
|
Mostly Clear
|
69°F |
10 to 15 mph
E
|
|
Sunday
Jul 19
|
Mostly Sunny
|
98°F |
10 mph
SE
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
78°F |
10 to 15 mph
S
|
|
Monday
Jul 20
|
Sunny
|
103°F |
10 to 15 mph
W
|
|
Monday Night
Jul 20
|
Mostly Clear
|
70°F |
10 to 15 mph
NNW
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
89°F |
10 to 20 mph
NNW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
61°F |
5 to 15 mph
NE
|
|
Wednesday
Jul 22
|
Mostly Sunny then Slight Chance Rain Showers
|
83°F |
5 to 10 mph
SE
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms
|
64°F |
10 mph
SSE
|
|
Thursday
Jul 23
|
Chance Showers And Thunderstorms
|
86°F |
10 mph
SSE
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
SE
|
|
Friday
Jul 24
|
Slight Chance Showers And Thunderstorms then Partly Sunny
|
88°F |
5 to 10 mph
ESE
|
|
Friday Night
Jul 24
|
Partly Cloudy
|
64°F |
5 to 10 mph
ESE
|
Major City Forecasts
Live forecast snapshots for major cities across Yankton County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Yankton County.
Largest mapped city population in this region: 14,651.
