Gregory County, SD Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Gregory County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy. Low around 71, with temperatures rising to around 75 overnight. South southwest wind around 15 mph, with gusts as high as 30 mph.
County Weather Overview
This county weather page brings together forecast coverage for Gregory 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 Gregory County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Sep 4, 2026
- Latest sync
- Aug 29, 2026 5:53 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Gregory County
Saturday looks like the warmest upcoming period in Gregory County at 93 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Overnight at about 15 mph SSW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 29, 2026 5:53 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KLNX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly sunny, with a high near 93. West wind 5 to 15 mph.
Mostly cloudy, with a low around 69. South southwest wind 5 to 10 mph.
Mostly sunny, with a high near 93. South southwest wind around 10 mph.
Partly cloudy, with a low around 67. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Partly sunny, with a high near 85. North northeast wind 5 to 15 mph, with gusts as high as 25 mph.
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 89.
Partly cloudy, with a low around 66.
Mostly sunny, with a high near 89.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 66.
Mostly sunny, with a high near 88.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Aug 29
|
Mostly Cloudy
|
71°F |
15 mph
SSW
|
|
Saturday
Aug 29
|
Mostly Sunny
|
93°F |
5 to 15 mph
W
|
|
Saturday Night
Aug 29
|
Mostly Cloudy
|
69°F |
5 to 10 mph
SSW
|
|
Sunday
Aug 30
|
Mostly Sunny
|
93°F |
10 mph
SSW
|
|
Sunday Night
Aug 30
|
Partly Cloudy
|
67°F |
10 to 15 mph
WSW
|
|
Monday
Aug 31
|
Partly Sunny
|
85°F |
5 to 15 mph
NNE
|
|
Monday Night
Aug 31
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
65°F |
5 mph
SE
|
|
Tuesday
Sep 1
|
Chance Showers And Thunderstorms
|
85°F |
5 to 10 mph
SSE
|
|
Tuesday Night
Sep 1
|
Chance Showers And Thunderstorms
|
64°F |
10 mph
SE
|
|
Wednesday
Sep 2
|
Slight Chance Showers And Thunderstorms then Sunny
|
89°F |
10 to 15 mph
SSE
|
|
Wednesday Night
Sep 2
|
Partly Cloudy
|
66°F |
10 mph
SSE
|
|
Thursday
Sep 3
|
Mostly Sunny
|
89°F |
10 mph
SSW
|
|
Thursday Night
Sep 3
|
Slight Chance Showers And Thunderstorms
|
66°F |
5 to 10 mph
S
|
|
Friday
Sep 4
|
Mostly Sunny
|
88°F |
5 to 10 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Gregory County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Gregory County.
Largest mapped city population in this region: 1,250.
