Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Severe weather season begins soon. Here's where tornadoes could strike this spring. Chevron right

Keystone, SD

45°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Keystone

South Dakota

45°
No results found.
Try searching for a city, zip code or point of interest.
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
Keystone, 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
Friday, February 27

Current Weather

8:34 AM

45°F
Sunny
RealFeel® 48°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
RealFeel Shade™ 45°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
RealFeel®
48°
RealFeel Shade™
45°
Max UV Index
1.2 (Low)
Wind
NW 4 mph
Wind Gusts
14 mph
Humidity
30%
Indoor Humidity
27% (Very Dry)
Dew Point
15° F
Pressure
↔ 29.91 in
Cloud Cover
0%
Visibility
37 mi
Cloud Ceiling
40000 ft

Day

2/27
54°Hi
RealFeel® 52°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
RealFeel Shade™ 49°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
Clouds and sun

Max UV Index3.0 (Moderate)

AccuLumen Brightness Index™6 (Medium)

WindNNW 9 mph

Wind Gusts23 mph

Probability of Precipitation0%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover62%

Morning

Afternoon

Night

2/27
30°Lo
RealFeel® 25°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
Mostly cloudy

WindWSW 7 mph

Wind Gusts9 mph

Probability of Precipitation0%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover78%

Evening

Overnight

Sun & Moon

11 hrs 05 mins
Rise 6:34 AM
Set 5:39 PM
Waxing Gibbous
Rise 1:18 PM
Set 5:16 AM

Temperature History

2/27
High
Low
Forecast
54°
30°
Average
40°
18°
Last Year
55°
29°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Arctic surge to fuel early-week winter storm for Midwest, Northeast

4 hours ago

Hurricane

Hurricane Melissa upgraded in report to 190 mph winds

19 hours ago

Severe Weather

Tornado season: What forecasters expect for severe weather in 2026

15 hours ago

Severe Weather

March springlike surge to foster severe storms from Texas to Michigan

16 hours ago

Weather News

Explosive Florida wildfire shuts down I-75 amid extreme drought

1 day ago

 More Stories

Featured Stories

Winter Weather

Rhode Island student dies while charging phone in car during blizzard

53 minutes ago

Weather News

After heartbreaking loss, famous eagle Jackie lays new egg

1 day ago

Astronomy

March adds daylight fast, a change bigger than most people realize

1 day ago

Weather News

A 4-month-old bird flew over 8,000 miles nonstop across the Pacific

1 day ago

Astronomy

Webb reveals Uranus’s upper atmosphere in unprecedented detail

1 day ago
World North America United States South Dakota Keystone

Weather Near Keystone:

  • Rapid City, SD
  • Sheridan, WY
  • Spearfish, 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

...

...

...