Grant County, SD Weather Forecast
County weather hub
Mostly Cloudy then Patchy Frost
Compare major city weather across Grant County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Patchy frost after 3am. Mostly cloudy, with a low around 37. North northwest wind 5 to 10 mph.
County Weather Overview
This county weather page brings together forecast coverage for Grant 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 Grant County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 13 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 9:51 PM CDT
- Forecast office
- ABR
- Source
- NOAA / NWS
Daily Outlook
This Week in Grant County
Tuesday looks like the warmest upcoming period in Grant County at 70 degrees F.
Friday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Saturday at about 18 to 25 mph SSW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 9:51 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ABR
- Radar station
- KABR
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy frost before 8am. Mostly sunny, with a high near 57. North northeast wind around 5 mph.
A slight chance of rain showers between 4am and 5am. Partly cloudy. Low around 41, with temperatures rising to around 45 overnight. Northeast wind around 3 mph. Chance of precipitation is 20%.
A chance of rain showers before 1pm. Mostly cloudy, with a high near 59. Northwest wind 3 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Partly cloudy, with a low around 37. Northwest wind 20 to 24 mph, with gusts as high as 33 mph.
Sunny, with a high near 54. Northwest wind 7 to 23 mph, with gusts as high as 33 mph.
Clear, with a low around 36. Southwest wind 5 to 21 mph, with gusts as high as 32 mph.
Sunny, with a high near 65. South southwest wind 18 to 25 mph, with gusts as high as 40 mph.
Clear, with a low around 46. Southwest wind 17 to 25 mph, with gusts as high as 36 mph.
Sunny, with a high near 69.
Partly cloudy, with a low around 42.
Sunny, with a high near 66.
Mostly clear, with a low around 46.
Sunny, with a high near 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 13
|
Mostly Cloudy then Patchy Frost
|
37°F |
5 to 10 mph
NNW
|
|
Wednesday
Oct 14
|
Patchy Frost then Mostly Sunny
|
57°F |
5 mph
NNE
|
|
Wednesday Night
Oct 14
|
Partly Cloudy then Slight Chance Rain Showers
|
41°F |
3 mph
NE
|
|
Thursday
Oct 15
|
Chance Rain Showers
|
59°F |
3 to 20 mph
NW
|
|
Thursday Night
Oct 15
|
Partly Cloudy
|
37°F |
20 to 24 mph
NW
|
|
Friday
Oct 16
|
Sunny
|
54°F |
7 to 23 mph
NW
|
|
Friday Night
Oct 16
|
Clear
|
36°F |
5 to 21 mph
SW
|
|
Saturday
Oct 17
|
Sunny
|
65°F |
18 to 25 mph
SSW
|
|
Saturday Night
Oct 17
|
Clear
|
46°F |
17 to 25 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
69°F |
8 to 21 mph
WSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
42°F |
7 mph
NW
|
|
Monday
Oct 19
|
Sunny
|
66°F |
3 to 7 mph
NE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
46°F |
5 to 8 mph
SSE
|
|
Tuesday
Oct 20
|
Sunny
|
70°F |
8 to 16 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Grant County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Grant County.
Largest mapped city population in this region: 3,066.
