Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Daily risk for severe t-storms across the Plains and Midwest this week. Get the forecast. Chevron right

Roundup, MT

54°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Roundup

Montana

54°
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
Roundup, MT 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

4 PM

63°
RealFeel® 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 65%
Chevron down
Thunderstorms
alerts

Special Weather Statement

3:37 PM Sunday - 4:15 PM Sunday

RealFeel Shade™54°

WindN 17 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts32 mph

Humidity53%

Indoor Humidity44% (Ideal Humidity)

Dew Point46° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.05 in

Visibility5 mi

Cloud Ceiling4000 ft

5 PM

63°
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

RealFeel Shade™58°

WindN 16 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts32 mph

Humidity50%

Indoor Humidity42% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling13500 ft

6 PM

62°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™58°

WindNNW 15 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts33 mph

Humidity49%

Indoor Humidity40% (Ideal Humidity)

Dew Point43° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling14700 ft

7 PM

61°
RealFeel® 57°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 22%
Chevron down
Cloudy

RealFeel Shade™57°

WindNNW 13 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts23 mph

Humidity47%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling14700 ft

8 PM

60°
RealFeel® 56°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™56°

WindNW 10 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts14 mph

Humidity44%

Indoor Humidity33% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

57°
RealFeel® 53°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™53°

WindWNW 9 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts10 mph

Humidity46%

Indoor Humidity31% (Slightly Dry)

Dew Point36° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

55°
RealFeel® 50°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindW 9 mph

Air QualityFair

Wind Gusts10 mph

Humidity49%

Indoor Humidity30% (Slightly Dry)

Dew Point36° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

52°
RealFeel® 46°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly cloudy

WindW 10 mph

Air QualityFair

Wind Gusts15 mph

Humidity54%

Indoor Humidity30% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Roundup

AccuWeather's hourly forecast for Roundup provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 63° with a RealFeel® of 55°, thunderstorms with a 65% 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

Tuesday

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

3 hours ago

Hurricane

More tropical activity brewing in the eastern Pacific after Amanda

2 hours 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

3 hours ago

Recreation

Firefly season is here: When to watch for summer’s flashing lights

1 day 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 Montana Roundup

Weather Near Roundup:

  • Billings, MT
  • Cody, WY
  • Miles City, MT
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

...

...

...