Letcher, SD Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Letcher, SD in one place.
Mostly sunny, with a high near 99. Heat index values as high as 101. South southeast wind 10 to 30 mph, with gusts as high as 40 mph.
Local Weather Overview
This forecast page for Letcher, SD is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jun 7, 2026 9:34 PM CDT.
The active forecast window currently covers Jun 9 to Jun 14, 2026 for Letcher, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 14, 2026
- Latest sync
- Jun 7, 2026 9:34 PM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Letcher
Tuesday looks like the warmest upcoming period in Letcher at 99 degrees F.
Saturday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 30 mph SSE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 7, 2026 9:34 PM CDT
- Coverage
- 6 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
Showers and thunderstorms after 7pm. Partly cloudy, with a low around 69. South wind 15 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms. Sunny, with a high near 90. West southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly clear, with a low around 60. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Mostly clear, with a low around 57.
Sunny, with a high near 89.
Mostly clear, with a low around 59.
Mostly sunny, with a high near 83.
Partly cloudy, with a low around 54.
Mostly sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Mostly Sunny
|
99°F |
10 to 30 mph
SSE
|
|
Tuesday Night
Jun 9
|
Showers And Thunderstorms
|
69°F |
15 to 30 mph
S
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
90°F |
15 to 25 mph
WSW
|
|
Wednesday Night
Jun 10
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
60°F |
10 to 25 mph
WNW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms then Mostly Sunny
|
82°F |
15 to 25 mph
WNW
|
|
Thursday Night
Jun 11
|
Mostly Clear
|
57°F |
10 to 25 mph
W
|
|
Friday
Jun 12
|
Sunny
|
89°F |
10 to 20 mph
WSW
|
|
Friday Night
Jun 12
|
Mostly Clear
|
59°F |
10 to 20 mph
WNW
|
|
Saturday
Jun 13
|
Mostly Sunny
|
83°F |
10 to 20 mph
NW
|
|
Saturday Night
Jun 13
|
Partly Cloudy
|
54°F |
10 to 20 mph
NNW
|
|
Sunday
Jun 14
|
Mostly Sunny
|
79°F |
10 to 20 mph
NNW
|
Nearby Forecasts
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