Mount Vernon, SD Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Mount Vernon, SD in one place.
Mostly sunny, with a high near 94. Northeast wind 10 to 15 mph.
Local Weather Overview
This forecast page for Mount Vernon, 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 17, 2026 6:39 AM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Mount Vernon, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 6:39 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Mount Vernon
Sunday looks like the warmest upcoming period in Mount Vernon at 102 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Monday at about 10 to 20 mph WNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 6:39 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
Partly cloudy, with a low around 70. East southeast wind around 15 mph.
Mostly sunny, with a high near 102. South southeast wind around 15 mph, with gusts as high as 25 mph.
A chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Mostly sunny, with a high near 100.
Mostly clear, with a low around 68.
Mostly sunny, with a high near 87.
Partly cloudy, with a low around 62.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Mostly Sunny
|
94°F |
10 to 15 mph
NE
|
|
Saturday Night
Jul 18
|
Partly Cloudy
|
70°F |
15 mph
ESE
|
|
Sunday
Jul 19
|
Mostly Sunny
|
102°F |
15 mph
SSE
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms
|
77°F |
15 mph
S
|
|
Monday
Jul 20
|
Mostly Sunny
|
100°F |
10 to 20 mph
WNW
|
|
Monday Night
Jul 20
|
Mostly Clear
|
68°F |
15 to 20 mph
N
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
87°F |
15 to 20 mph
N
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
62°F |
5 to 20 mph
ENE
|
|
Wednesday
Jul 22
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
84°F |
5 to 10 mph
SSE
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms
|
62°F |
10 mph
SE
|
|
Thursday
Jul 23
|
Chance Showers And Thunderstorms
|
85°F |
10 to 15 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mount Vernon.