Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Tropical Storm Boris to make landfall in Mexico. Click to see timing and impacts. Chevron right
Daily risk for severe t-storms across the Plains and Midwest this week. Get the forecast. Chevron right

Keystone, CO

52°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Keystone

Colorado

52°
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

Hourly

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

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

7 AM

50°
RealFeel® 51°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 13%
Chevron down
Partly sunny

RealFeel Shade™48°

WindS 6 mph

Air QualityExcellent

Max UV Index1.3 (Low)

Wind Gusts9 mph

Humidity40%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover38%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

54°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™53°

WindS 5 mph

Air QualityFair

Max UV Index2.5 (Low)

Wind Gusts7 mph

Humidity37%

Indoor Humidity37% (Dry)

Dew Point28° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover19%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

58°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™57°

WindSSW 6 mph

Air QualityFair

Max UV Index3.9 (Moderate)

Wind Gusts7 mph

Humidity30%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover5%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

62°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™60°

WindSW 7 mph

Air QualityFair

Max UV Index5.6 (High)

Wind Gusts12 mph

Humidity23%

Indoor Humidity33% (Dry)

Dew Point24° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover7%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

64°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™61°

WindSW 9 mph

Air QualityFair

Max UV Index8.8 (Very High)

Wind Gusts17 mph

Humidity18%

Indoor Humidity30% (Dry)

Dew Point20° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover8%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

65°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™62°

WindSW 10 mph

Air QualityFair

Max UV Index11.7 (Extreme)

Wind Gusts23 mph

Humidity15%

Indoor Humidity28% (Very Dry)

Dew Point17° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

67°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™63°

WindSW 12 mph

Air QualityPoor

Max UV Index12.8 (Extreme)

Wind Gusts25 mph

Humidity14%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

68°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™64°

WindSW 12 mph

Air QualityPoor

Max UV Index11.7 (Extreme)

Wind Gusts29 mph

Humidity12%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

69°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™65°

WindSW 12 mph

Air QualityPoor

Max UV Index8.8 (Very High)

Wind Gusts30 mph

Humidity11%

Indoor Humidity11% (Very Dry)

Dew Point12° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

69°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™66°

WindSW 13 mph

Air QualityPoor

Max UV Index5.6 (High)

Wind Gusts31 mph

Humidity10%

Indoor Humidity10% (Very Dry)

Dew Point11° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover9%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

71°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™67°

WindSW 13 mph

Air QualityPoor

Max UV Index3.9 (Moderate)

Wind Gusts30 mph

Humidity9%

Indoor Humidity9% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover9%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

69°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™65°

WindSW 13 mph

Air QualityPoor

Max UV Index2.5 (Low)

Wind Gusts28 mph

Humidity9%

Indoor Humidity9% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

68°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™65°

WindSW 12 mph

Air QualityPoor

Max UV Index1.3 (Low)

Wind Gusts21 mph

Humidity10%

Indoor Humidity22% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

66°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

RealFeel Shade™64°

WindSW 9 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts14 mph

Humidity10%

Indoor Humidity23% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

64°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Red Flag Warning

10:00 AM Monday - 10:00 PM Monday

WindSSW 8 mph

Air QualityFair

Wind Gusts10 mph

Humidity12%

Indoor Humidity24% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

61°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 9 mph

Air QualityFair

Wind Gusts10 mph

Humidity15%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

59°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindS 9 mph

Air QualityFair

Wind Gusts10 mph

Humidity18%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 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 50° with a RealFeel® of 51°, partly sunny with a 13% 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

Wednesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Relief is coming to Northeast, but heat and humidity to bounce back

2 hours ago

Hurricane

Tropical Storm Boris to make landfall in Mexico with winds, heavy rain

35 minutes ago

Weather News

Powerful 7.8 earthquake rocks southern Philippines

22 minutes ago

Weather News

Outer Banks home collapses into ocean for first time in months

3 days ago

Severe Weather

Active stretch of severe weather to unfold across the Plains, Midwest

1 hour ago

 More Stories

Featured Stories

Health

Why Google wants to release 32 million mosquitoes in 2 states

2 days ago

Weather News

These trees can 'hold their breath' when volcanoes erupt in Hawaii

2 days ago

Astronomy

Sunset after 9pm: Why the sun, clock don't align around the solstice

2 days ago

Astronomy

Venus, Jupiter to shine incredibly close for 2 nights next week

2 days ago

Weather News

Record sargassum seaweed swamps Caribbean, U.S. beaches

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

...

...

...