Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Hurricane Erin to fuel dangerous surf, coastal flood risk from Carolinas to New England. Chevron right
Puerto Rico, Leeward Islands brace for Hurricane Erin. Get the details. Chevron right

Gannvalley, SD

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

Gannvalley

South Dakota

74°
No results found.
Try searching for a city, zip code or point of interest.
settings
Gannvalley, SD Weather
Today WinterCast Local {stormName} Tracker Hourly Daily 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 Daily Radar MinuteCast® Monthly Air Quality Health & Activities
Sunday, August 17

Day

8/17
92°Hi
RealFeel® 97°
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™ 95°
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
Breezy in the morning; mostly cloudy and humid with a thunderstorm in parts of the area; thunderstorms can bring localized damaging wind gusts

Max UV Index6.0 (High)

AccuLumen Brightness Index™5 (Medium)

WindWSW 12 mph

Wind Gusts22 mph

Probability of Precipitation80%

Probability of Thunderstorms72%

Precipitation0.08 in

Rain0.08 in

Hours of Precipitation1

Hours of Rain1

Cloud Cover76%

Morning

Afternoon

Night

8/17
65°Lo
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Partly cloudy and humid with a couple of thunderstorms

WindNNE 7 mph

Wind Gusts9 mph

Probability of Precipitation88%

Probability of Thunderstorms79%

Precipitation0.20 in

Rain0.20 in

Hours of Precipitation2

Hours of Rain2

Cloud Cover27%

Evening

Overnight

Sun & Moon

13 hrs 56 mins
Rise 6:42 AM
Set 8:38 PM
Waning Crescent
Rise 12:17 AM
Set 4:57 PM

Temperature History

8/17
High
Low
Forecast
92°
65°
Average
86°
62°
Last Year
82°
61°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Erin intensifies into hurricane as it tracks near Puerto Rico

2 hours ago

Recreation

Man rescued after falling 30 feet down waterfall in Maine

1 day ago

Severe Weather

Severe storms, flash flooding to pester north-central US

5 hours ago

Weather News

New York skyscraper had 1-in-16 chance of collapse. Only one man knew

1 day ago

Hurricane

Hurricane safety: Explaining rapid intensification and how to prepare

1 day ago

 More Stories

Featured Stories

Weather News

Heavy rain in Indian Kashmir leaves dozens dead, more than 200 missing

1 day ago

Weather News

Pompeii’s remains reveal a hidden postscript

1 day ago

Astronomy

Goodbye long days: Where sunset is now happening before 8 pm

1 day ago

Weather News

US teen pilot accused of unauthorized Antarctic landing reaches deal

1 day ago

Weather News

New York skyscraper had 1-in-16 chance of collapse. Only one man knew

1 day ago
World North America United States South Dakota Gannvalley

Weather Near Gannvalley:

  • 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 RealFeel® and RealFeel Shade™ 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 RealFeel® and RealFeel Shade™ 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
© 2025 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

...

...

...