Montana · NWS TFX office

Great Falls, MT weather

It is 38°F and clear at Great Falls, Great Falls International Airport as of Oct 28, 2:53 AM MDT. Overnight: Partly Cloudy, low near 35°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 12:31 AM MDT.

Updated Oct 28, 3:19 AM MDT (snapshot)

Current conditions

Temperature

38°F

Clear · feels like 30°F

Wind

SW 14 mph

Humidity 70% · dew point 29°F

Pressure · visibility

—

Visibility 10 mi

Observed at Great Falls, Great Falls International Airport (KGTF), Oct 28, 2:53 AM MDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Great Falls forecast zone right now.

Around the NWS TFX forecast area

No active alerts in zones served by the TFX office near Great Falls.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. Montana has 1 active alert: see it.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Great Falls (local time)
TimeTempForecastPrecip. chanceWind
Wed 5 AM37°FPartly Cloudy1%SW 14 mph
Wed 6 AM36°FMostly Sunny2%SW 13 mph
Wed 7 AM35°FPartly Sunny1%SW 13 mph
Wed 8 AM35°FPartly Sunny1%SW 12 mph
Wed 9 AM37°FPartly Sunny1%SW 12 mph
Wed 10 AM42°FMostly Sunny1%SW 14 mph
Wed 11 AM45°FSunny1%SW 15 mph
Wed 12 PM47°FSunny1%SW 16 mph
Wed 1 PM49°FSunny1%WSW 16 mph
Wed 2 PM50°FSunny1%WSW 16 mph
Wed 3 PM51°FSunny2%WSW 16 mph
Wed 4 PM52°FSunny2%WSW 14 mph
Wed 5 PM50°FSunny2%WSW 9 mph
Wed 6 PM48°FPartly Cloudy1%WSW 6 mph
Wed 7 PM46°FPartly Cloudy1%WSW 5 mph
Wed 8 PM41°FPartly Cloudy1%SW 5 mph
Wed 9 PM40°FPartly Cloudy2%SW 5 mph
Wed 10 PM38°FPartly Cloudy2%SSW 3 mph
Wed 11 PM36°FPartly Cloudy2%SSW 3 mph
Thu 12 AM34°FPartly Cloudy2%W 3 mph
Thu 1 AM33°FPartly Cloudy2%WSW 3 mph
Thu 2 AM32°FPartly Cloudy2%SSW 2 mph
Thu 3 AM31°FPartly Cloudy2%SSW 2 mph
Thu 4 AM31°FPartly Cloudy2%WSW 1 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Great Falls can differ.

7-day forecast

Overnight

Low 35°F

Partly cloudy, with a low around 35. Southwest wind around 16 mph, with gusts as high as 31 mph.

Wednesday

High 54°F·Low 28°F

Mostly sunny. High near 54, with temperatures falling to around 50 in the afternoon. Southwest wind 9 to 16 mph, with gusts as high as 29 mph.

Wednesday Night: Partly cloudy, with a low around 28. Southwest wind 1 to 6 mph.

Thursday

High 41°F·Low 28°F

Patchy fog between 7am and 8am. Mostly sunny, with a high near 41. North northeast wind 1 to 8 mph.

Thursday Night: Mostly cloudy, with a low around 28. Northeast wind 1 to 7 mph.

Friday

High 44°F·Low 28°F

Mostly cloudy, with a high near 44. Northeast wind 0 to 3 mph.

Friday Night: Mostly cloudy, with a low around 28. Northwest wind around 2 mph.

Saturday

High 53°F·Low 32°F

Mostly sunny, with a high near 53. West wind around 2 mph.

Saturday Night: A chance of rain. Mostly cloudy, with a low around 32.

Sunday

High 45°F·Low 30°F

Rain likely. Mostly cloudy, with a high near 45.

Sunday Night: A chance of rain. Mostly cloudy, with a low around 30.

Monday

High 47°F·Low 31°F

A chance of rain before 8am, then a chance of rain and snow between 8am and 5pm. Mostly sunny, with a high near 47.

Monday Night: Partly cloudy, with a low around 31.

Tuesday

High 51°F

Mostly sunny, with a high near 51.

Nearby cities

See every city we cover in Montana, or check all active alerts.

About this forecast

Forecast office
Great Falls is served by the National Weather Service TFX forecast office, forecast zone MTZ312, county zone MTC013.
Location used
The Census Bureau's internal point for Great Falls (47.5025, -111.3000), in Cascade County. Population: 60,013 (2024 estimate), number 3 of the 7 Montana cities on this site.
Radar
Nearest NWS radar: KTFX. View it on radar.weather.gov.

On Amazon

Weather-ready picks

As an Amazon Associate I earn from qualifying purchases.

Home & kitchen LEVOIT Air Purifier An air purifier for smoky or high-pollen days indoors. View on Amazon → Men’s fashion Hanes Fleece Hooded Sweatshirt A warm hoodie for chilly mornings. View on Amazon → Fitness & outdoors Stanley Quencher H2.0 Tumbler A big tumbler for long commutes and outdoor days. View on Amazon → Fitness & outdoors LifeStraw Personal Water Filter A personal water filter worth adding to an emergency kit. View on Amazon →

Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/47.5025,-111.3 (forecast issued Oct 28, 12:31 AM MDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

More Montana cities