Lake County, SD Weather Forecast
County weather hub
Chance Rain Showers then Mostly Cloudy
Compare major city weather across Lake County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers before 8pm. Mostly cloudy, with a low around 36. North wind 5 to 10 mph. Chance of precipitation is 20%.
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
- Oct 13 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 8:21 PM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake County
Tuesday looks like the warmest upcoming period in Lake County at 71 degrees F.
Friday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Thursday at about 5 to 20 mph N.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 8:21 PM CDT
- Coverage
- 8 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
Partly sunny, with a high near 59. Northeast wind 5 to 10 mph.
Rain showers likely after 3am. Mostly cloudy. Low around 41, with temperatures rising to around 45 overnight. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers likely. Mostly cloudy, with a high near 59. North wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 36. Northwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.
Sunny, with a high near 54. North northwest wind 5 to 20 mph, with gusts as high as 30 mph.
Clear, with a low around 34.
Sunny, with a high near 64.
Mostly clear, with a low around 43.
Sunny, with a high near 67.
Partly cloudy, with a low around 42.
Sunny, with a high near 68.
Mostly clear, with a low around 45.
Sunny, with a high near 71.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 13
|
Chance Rain Showers then Mostly Cloudy
|
36°F |
5 to 10 mph
N
|
|
Wednesday
Oct 14
|
Partly Sunny
|
59°F |
5 to 10 mph
NE
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy then Rain Showers Likely
|
41°F |
5 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers Likely
|
59°F |
5 to 20 mph
N
|
|
Thursday Night
Oct 15
|
Slight Chance Rain Showers then Partly Cloudy
|
36°F |
20 mph
NW
|
|
Friday
Oct 16
|
Sunny
|
54°F |
5 to 20 mph
NNW
|
|
Friday Night
Oct 16
|
Clear
|
34°F |
5 to 15 mph
WSW
|
|
Saturday
Oct 17
|
Sunny
|
64°F |
20 mph
SSW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
43°F |
15 to 20 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
67°F |
10 to 15 mph
SW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
42°F |
5 mph
NW
|
|
Monday
Oct 19
|
Sunny
|
68°F |
5 to 10 mph
E
|
|
Monday Night
Oct 19
|
Mostly Clear
|
45°F |
5 to 10 mph
SE
|
|
Tuesday
Oct 20
|
Sunny
|
71°F |
10 to 20 mph
SSE
|
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.
