Yankton County, SD Weather Forecast
County weather hub
Chance Rain Showers
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. Cloudy. High near 64, with temperatures falling to around 61 in the afternoon. North northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
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
- May 18 to May 22, 2026
- Latest sync
- May 16, 2026 2:17 PM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Yankton County
Friday looks like the warmest upcoming period in Yankton County at 76 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Monday Night at about 15 to 25 mph NNW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- May 16, 2026 2:17 PM CDT
- Coverage
- 5 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
A chance of rain showers before 7pm, then showers and thunderstorms likely. Cloudy, with a low around 42. North northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.
A chance of rain showers before 7am. Mostly cloudy, with a high near 57. Chance of precipitation is 40%.
Partly cloudy, with a low around 37.
Mostly sunny, with a high near 65.
Partly cloudy, with a low around 43.
Partly sunny, with a high near 71.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 47.
A slight chance of rain showers. Partly sunny, with a high near 76.
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
May 18
|
Chance Rain Showers
|
64°F |
15 mph
NNW
|
|
Monday Night
May 18
|
Showers And Thunderstorms Likely
|
42°F |
15 to 25 mph
NNW
|
|
Tuesday
May 19
|
Chance Rain Showers then Mostly Cloudy
|
57°F |
20 to 25 mph
NW
|
|
Tuesday Night
May 19
|
Partly Cloudy
|
37°F |
5 to 20 mph
NW
|
|
Wednesday
May 20
|
Mostly Sunny
|
65°F |
5 mph
NNE
|
|
Wednesday Night
May 20
|
Partly Cloudy
|
43°F |
10 mph
SE
|
|
Thursday
May 21
|
Partly Sunny
|
71°F |
10 to 15 mph
SSE
|
|
Thursday Night
May 21
|
Mostly Cloudy then Slight Chance Rain Showers
|
47°F |
10 to 15 mph
SE
|
|
Friday
May 22
|
Slight Chance Rain Showers
|
76°F |
10 to 15 mph
SSE
|
|
Friday Night
May 22
|
Chance Showers And Thunderstorms
|
53°F |
10 to 15 mph
SE
|
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.
