Lake County, SD Weather Forecast
County weather hub
Sunny
Compare major city weather across Lake County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 91. South wind around 10 mph.
County Weather Overview
This county weather page brings together forecast coverage for Lake 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 Lake County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 7:26 PM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake County
Friday looks like the warmest upcoming period in Lake County at 97 degrees F.
Monday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Monday at about 10 to 20 mph NNW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 7:26 PM 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
Clear, with a low around 69. South wind 5 to 15 mph.
Sunny, with a high near 91. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly clear, with a low around 69. South southeast wind 5 to 15 mph.
Sunny, with a high near 92. South wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly clear, with a low around 72. South southeast wind 10 to 15 mph.
Sunny, with a high near 97.
Mostly clear, with a low around 72.
Sunny, with a high near 95.
Mostly clear, with a low around 71.
Mostly sunny, with a high near 96.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 71.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89.
Partly cloudy, with a low around 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 14
|
Sunny
|
91°F |
10 mph
S
|
|
Tonight
Jul 14
|
Clear
|
69°F |
5 to 15 mph
S
|
|
Wednesday
Jul 15
|
Sunny
|
91°F |
5 to 15 mph
SSW
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
69°F |
5 to 15 mph
SSE
|
|
Thursday
Jul 16
|
Sunny
|
92°F |
5 to 15 mph
S
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
72°F |
10 to 15 mph
SSE
|
|
Friday
Jul 17
|
Sunny
|
97°F |
10 mph
SSW
|
|
Friday Night
Jul 17
|
Mostly Clear
|
72°F |
10 mph
ESE
|
|
Saturday
Jul 18
|
Sunny
|
95°F |
10 mph
NE
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
71°F |
10 mph
E
|
|
Sunday
Jul 19
|
Mostly Sunny
|
96°F |
10 mph
SE
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms
|
71°F |
10 mph
SSW
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
89°F |
10 to 20 mph
NNW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
66°F |
5 to 20 mph
N
|
Major City Forecasts
Live forecast snapshots for major cities across Lake County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Lake County.
Largest mapped city population in this region: 7,064.
