Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
The heat dome is shifting. Click to see where the heat is headed next. Chevron right

Mount Vernon, SD

74°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Mount Vernon

South Dakota

74°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Mount Vernon, SD Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Tuesday, July 21

Day

7/21
91°Hi
RealFeel® 99°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
RealFeel Shade™ 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
Plenty of sun

Max UV Index9.0 (Very High)

WindSSE 6 mph

Wind Gusts12 mph

Probability of Precipitation5%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover7%

Morning

Afternoon

Night

7/21
68°Lo
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Mostly clear

WindNW 7 mph

Wind Gusts16 mph

Probability of Precipitation10%

Probability of Thunderstorms1%

Precipitation0.00 in

Cloud Cover19%

Evening

Overnight

Sun & Moon

14 hrs 58 mins
Rise 6:10 AM
Set 9:08 PM
First Quarter
Rise 2:40 PM
Set 12:33 AM

Temperature History

7/21
High
Low
Forecast
91°
68°
Average
86°
62°
Last Year
89°
70°
Record
114°
1934
44°
1947

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Storms, downpours to persist this week across central, eastern US

1 hour ago

Hurricane

Atlantic hurricane season off to a slow start as El Niño strengthens

1 hour ago

Severe Weather

Storms, heat and floods disrupt America’s 250th birthday celebrations

12 hours ago

Weather Forecasts

Extreme heat to shift west into mid-July prior to return of monsoon

1 hour ago
Live Blog

Live: World Cup 2026 weather updates

LATEST ENTRY

Storms delay Mexico vs. England showdown in Mexico City

18 hours ago

 More Stories

Featured Stories

Weather News

Texas Hill Country marks 1 year since deadly July 4 flood

3 days ago

Health

NYC Legionnaires' disease outbreak jumps to 14 confirmed cases

18 hours ago

Weather News

Mother dies trying to save son from Tennessee floodwaters

15 hours ago

Travel

Plane makes hard landing into New York’s East River, officials say

17 hours ago

Recreation

Girl survives rabid bat attack after receiving lifesaving treatment

4 days ago
World North America United States South Dakota Mount Vernon

Weather Near Mount Vernon:

  • Aberdeen, SD
  • Pierre, SD
  • Sioux Falls, SD
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...