Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
West faces hottest weather so far this year as heat dome builds. Click for the forecast. Chevron right

Big Arm, MT

76°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Big Arm

Montana

76°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
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
Big Arm, 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
Tuesday, July 21

Day

7/21
88°Hi
RealFeel® 94°
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™ 87°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
Sunshine

Max UV Index9.0 (Very High)

Wind0 mph

Wind Gusts1 mph

Probability of Precipitation10%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover9%

Morning

Afternoon

Night

7/21
59°Lo
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
Clear

WindN 1 mph

Wind Gusts1 mph

Probability of Precipitation5%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover0%

Evening

Overnight

Sun & Moon

15 hrs 26 mins
Rise 6:00 AM
Set 9:26 PM
First Quarter
Rise 2:58 PM
Set 12:25 AM

Temperature History

7/21
High
Low
Forecast
88°
59°
Average
84°
48°
Last Year
66°
56°
Record
100°
2024
36°
1996

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Atlantic hurricane season off to a slow start as El Niño strengthens

1 hour ago

Severe Weather

Tornado in Alaska? Video shows rare funnel cloud in remote landscape

1 hour ago

Weather Forecasts

Heat dome to broil western U.S. ahead of North America monsoon

1 hour ago
Live Blog

Live: World Cup 2026 weather updates

LATEST ENTRY

Quarterfinals to commence with heat on Thursday

3 hours ago

Severe Weather

Storms, downpours to persist this week across central, eastern US

1 hour ago

 More Stories

Featured Stories

Severe Weather

Storms, heat and floods disrupt America’s 250th birthday celebrations

22 hours ago

Health

NYC Legionnaires' disease outbreak jumps to 14 confirmed cases

1 day ago

Weather News

Mother dies trying to save son from Tennessee floodwaters

1 day ago

Travel

Plane makes hard landing into New York’s East River, officials say

1 day ago

Weather News

Toll from Venezuela earthquakes rises to 3,342, more than 16K injured

18 hours ago
World North America United States Montana Big Arm

Weather Near Big Arm:

  • Evergreen, MT
  • Kalispell, MT
  • Missoula, 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

...

...

...