Mount Vernon, SD Weather Forecast

Local 7-day forecast

49°

Slight Chance Snow Showers

Track current conditions, temperature changes, wind, and the full daily outlook for Mount Vernon, SD in one place.

Saturday, April 18, 2026

Wind: 20 to 30 mph NW

Saturday

A slight chance of snow showers before 1pm. Mostly sunny, with a high near 49.

Local 7-day forecast

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: Apr 15, 2026 3:51 AM CDT.

The active forecast window currently covers Apr 18 to Apr 21, 2026 for Mount Vernon, SD.

Page Snapshot

Page focus: city weather
Forecast window: Apr 18 to Apr 21, 2026
Latest sync: Apr 15, 2026 3:51 AM CDT
Forecast office: FSD
Source: NOAA / NWS

Next High

49°F

Saturday

Next Low

26°F

Saturday Night

Rain Outlook

Periods mentioning precipitation

Windiest

20 to 30 mph

Saturday

Daily Outlook

Today

Apr 18

Slight Chance Snow Showers

49 °F

/ 26°F

Wind 20 to 30 mph

Sun

Apr 19

Sunny

61 °F

/ 36°F

Wind 10 to 15 mph

Mon

Apr 20

Sunny

76 °F

/ 46°F

Wind 15 to 20 mph

Tue

Apr 21

Sunny

77 °F

Wind 15 to 20 mph

This Week in Mount Vernon

Tuesday looks like the warmest upcoming period in Mount Vernon at 77 degrees F.

Saturday Night is the coolest period ahead with temperatures near 26 degrees F.

The strongest winds are forecast for Saturday at about 20 to 30 mph NW.

Precipitation is mentioned in 1 upcoming forecast period.

Forecast Details

Last updated: Apr 15, 2026 3:51 AM CDT
Coverage: 4 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 source

Extended Forecast

Saturday Night

Apr 18

26°F

Mostly Clear

10 to 25 mph WNW

Mostly clear, with a low around 26.

Sunday

Apr 19

61°F

Sunny

10 to 15 mph WSW

Sunny, with a high near 61.

Sunday Night

Apr 19

36°F

Mostly Clear

10 to 15 mph ESE

Mostly clear, with a low around 36.

Monday

Apr 20

76°F

Sunny

15 to 20 mph SSE

Sunny, with a high near 76.

Monday Night

Apr 20

46°F

Mostly Clear

15 to 20 mph SSW

Mostly clear, with a low around 46.

Tuesday

Apr 21

77°F

Sunny

15 to 20 mph W

Sunny, with a high near 77.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Saturday Apr 18	Slight Chance Snow Showers	49°F	20 to 30 mph NW	A slight chance of snow showers before 1pm. Mostly sunny, with a high near 49.
Saturday Night Apr 18	Mostly Clear	26°F	10 to 25 mph WNW	Mostly clear, with a low around 26.
Sunday Apr 19	Sunny	61°F	10 to 15 mph WSW	Sunny, with a high near 61.
Sunday Night Apr 19	Mostly Clear	36°F	10 to 15 mph ESE	Mostly clear, with a low around 36.
Monday Apr 20	Sunny	76°F	15 to 20 mph SSE	Sunny, with a high near 76.
Monday Night Apr 20	Mostly Clear	46°F	15 to 20 mph SSW	Mostly clear, with a low around 46.
Tuesday Apr 21	Sunny	77°F	15 to 20 mph W	Sunny, with a high near 77.

Nearby Forecasts

Explore weather pages for nearby cities and major places around Mount Vernon.

Mitchell

Population 15,697

Region Links

Davison County weather

County forecast page

South Dakota weather

Statewide weather overview

United States weather

National weather entry point

Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.