Ethan, SD Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Ethan, SD in one place.
Sunny, with a high near 98. Heat index values as high as 100. South wind 10 to 15 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Ethan, 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: Jul 15, 2026 4:56 AM CDT.
The active forecast window currently covers Jul 16 to Jul 21, 2026 for Ethan, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 16 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 4:56 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Ethan
Sunday looks like the warmest upcoming period in Ethan at 102 degrees F.
Monday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Monday at about 15 to 25 mph NNW.
The forecast from Jul 16 through Jul 21 stays mostly dry.
Forecast Details
- Last updated
- Jul 15, 2026 4:56 AM 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
Mostly clear, with a low around 74. South wind 10 to 15 mph.
Sunny, with a high near 101. West southwest wind around 10 mph.
Mostly clear, with a low around 73.
Sunny, with a high near 99.
Mostly clear, with a low around 73.
Mostly sunny, with a high near 102.
Partly cloudy, with a low around 74.
Mostly sunny, with a high near 93.
Mostly clear, with a low around 66.
Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 16
|
Sunny
|
98°F |
10 to 15 mph
S
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
74°F |
10 to 15 mph
S
|
|
Friday
Jul 17
|
Sunny
|
101°F |
10 mph
WSW
|
|
Friday Night
Jul 17
|
Mostly Clear
|
73°F |
10 mph
NNE
|
|
Saturday
Jul 18
|
Sunny
|
99°F |
10 mph
NNE
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
73°F |
10 mph
E
|
|
Sunday
Jul 19
|
Mostly Sunny
|
102°F |
10 to 15 mph
SSW
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
74°F |
10 to 15 mph
W
|
|
Monday
Jul 20
|
Mostly Sunny
|
93°F |
15 to 25 mph
NNW
|
|
Monday Night
Jul 20
|
Mostly Clear
|
66°F |
10 to 20 mph
N
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
86°F |
10 to 15 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ethan.