Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Dangerous storms loom for millions from Texas to the Northeast. Click for the forecast. Chevron right
Heat wave brings summerlike weather to the East. See how hot it will get this week. Chevron right

Keystone, CO

29°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Keystone

Colorado

29°
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, CO 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 WinterCast

Hourly

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

WinterCast

Little to no accumulation

Wed, 5/20, 12:00 AM - Wed, 5/20, 5:00 AM

Snow

6 AM

25°
RealFeel® 23°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 3%
Chevron down
Mostly cloudy

RealFeel Shade™23°

WindWSW 5 mph

Air QualityExcellent

Max UV Index0.1 (Low)

Wind Gusts6 mph

Humidity85%

Indoor Humidity31% (Dry)

Dew Point21° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover87%

Visibility10 mi

Cloud Ceiling7100 ft

7 AM

25°
RealFeel® 23°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 4%
Chevron down
Cloudy

RealFeel Shade™23°

WindWSW 6 mph

Air QualityExcellent

Max UV Index0.5 (Low)

Wind Gusts6 mph

Humidity91%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling14700 ft

8 AM

28°
RealFeel® 24°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

RealFeel Shade™22°

WindS 7 mph

Air QualityExcellent

Max UV Index1.1 (Low)

Wind Gusts9 mph

Humidity81%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover83%

Visibility10 mi

Cloud Ceiling11400 ft

9 AM

31°
RealFeel® 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

RealFeel Shade™24°

WindS 8 mph

Air QualityExcellent

Max UV Index1.7 (Low)

Wind Gusts10 mph

Humidity80%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover87%

Visibility10 mi

Cloud Ceiling14700 ft

10 AM

36°
RealFeel® 33°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

RealFeel Shade™28°

WindS 9 mph

Air QualityFair

Max UV Index2.5 (Low)

Wind Gusts10 mph

Humidity69%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover87%

Visibility10 mi

Cloud Ceiling14500 ft

11 AM

39°
RealFeel® 38°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

RealFeel Shade™32°

WindS 9 mph

Air QualityFair

Max UV Index3.9 (Moderate)

Wind Gusts12 mph

Humidity61%

Indoor Humidity36% (Dry)

Dew Point26° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover85%

Visibility10 mi

Cloud Ceiling14300 ft

12 PM

42°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

RealFeel Shade™36°

WindSSW 9 mph

Air QualityFair

Max UV Index5.2 (Moderate)

Wind Gusts12 mph

Humidity55%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover84%

Visibility10 mi

Cloud Ceiling14200 ft

1 PM

43°
RealFeel® 45°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

RealFeel Shade™36°

WindSSW 9 mph

Air QualityFair

Max UV Index5.8 (High)

Wind Gusts10 mph

Humidity56%

Indoor Humidity37% (Dry)

Dew Point28° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover84%

Visibility10 mi

Cloud Ceiling14200 ft

2 PM

43°
RealFeel® 45°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly cloudy

RealFeel Shade™37°

WindSSW 8 mph

Air QualityFair

Max UV Index4.9 (Moderate)

Wind Gusts10 mph

Humidity58%

Indoor Humidity38% (Dry)

Dew Point29° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover87%

Visibility10 mi

Cloud Ceiling14200 ft

3 PM

42°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™37°

WindSSW 8 mph

Air QualityFair

Max UV Index3.5 (Moderate)

Wind Gusts12 mph

Humidity61%

Indoor Humidity38% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling14200 ft

4 PM

42°
RealFeel® 42°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™38°

WindSSW 7 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts10 mph

Humidity63%

Indoor Humidity39% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover92%

Visibility10 mi

Cloud Ceiling14200 ft

5 PM

41°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™38°

WindS 7 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts9 mph

Humidity68%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling14200 ft

6 PM

41°
RealFeel® 40°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™40°

WindS 6 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts7 mph

Humidity73%

Indoor Humidity41% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling14200 ft

7 PM

40°
RealFeel® 38°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 10%
Chevron down
Cloudy

RealFeel Shade™38°

WindS 6 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts7 mph

Humidity77%

Indoor Humidity42% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling11800 ft

8 PM

37°
RealFeel® 33°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 60%
Chevron down
Rain

RealFeel Shade™33°

WindS 6 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts6 mph

Humidity85%

Indoor Humidity42% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Rain0.02 in

Visibility6 mi

Cloud Ceiling7000 ft

9 PM

38°
RealFeel® 34°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 60%
Chevron down
Rain

WindS 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity86%

Indoor Humidity42% (Slightly Dry)

Dew Point34° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.02 in

Visibility6 mi

Cloud Ceiling7000 ft

10 PM

36°
RealFeel® 33°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindS 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity90%

Indoor Humidity42% (Slightly Dry)

Dew Point34° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling5900 ft

11 PM

36°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

WindS 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity90%

Indoor Humidity42% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling4800 ft

Hourly Weather Forecast for Keystone

AccuWeather's hourly forecast for Keystone provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 25° with a RealFeel® of 23°, mostly cloudy with a 3% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Thursday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Dangerous storms loom for millions from Texas to the Northeast

2 hours ago

Weather Forecasts

Heat wave to complete spring weather whiplash, worsen drought in East

2 hours ago

Severe Weather

Tornadoes charge through Plains, Midwest, ripping apart homes in Nebra...

17 hours ago

Astronomy

Crescent moon is about to join Venus and Jupiter in evening sky

23 hours ago

Weather Forecasts

Memorial Day weekend: Downpours, storms from Texas to New England

2 hours ago

 More Stories

Featured Stories

Astronomy

Watch an asteroid safely pass close to Earth on Monday

20 hours ago

Severe Weather

10 types of tornadoes that occur in the US

23 hours ago

Astronomy

SpaceX poised for first Starship flight test of 2026

3 days ago

Severe Weather

Does a green sky mean a tornado is coming?

23 hours ago

Climate

Turkmenistan's fiery 'Gates of Hell' crater is dimming

4 days ago
World North America United States Colorado Keystone

Weather Near Keystone:

  • Boulder, CO
  • Denver, CO
  • Fort Collins, CO
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

...

...

...