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Fort Smith, MT Weather

It is 28°F in Fort Smith, MT, observed at 7 AM MDT. Today: Sunny, high 56°F, low 32°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Fort Smith, MT current weather

28°F

Sunny

H 56° / L 32°Feels like 28°

  • No rain expected in the next 12 hours

Observed at FORT SMITH AIR STRIP (0.7 mi away), 10/29/2026, 7:00 AM MDT

Hourly forecast

NWS, updated 10/29/2026, 4:53 AM PT

  1. Now32°
  2. 8 AM32°
  3. 9 AM34°
  4. 10 AM42°
  5. 11 AM46°
  6. 12 PM51°
  7. 1 PM54°
  8. 2 PM55°
  9. 3 PM56°
  10. 4 PM55°
  11. 5 PM54°
  12. 6 PM51°
  13. 7 PM47°
  14. 8 PM44°
  15. 9 PM43°
  16. 10 PM41°
  17. 11 PM39°
  18. 12 AM38°Fri
  19. 1 AM37°
  20. 2 AM37°
  21. 3 AM36°
  22. 4 AM34°
  23. 5 AM34°
  24. 6 AM32°
  25. 7 AM32°
  26. 8 AM31°
  27. 9 AM33°
  28. 10 AM39°
  29. 11 AM42°
  30. 12 PM46°
  31. 1 PM49°
  32. 2 PM51°
  33. 3 PM52°
  34. 4 PM52°
  35. 5 PM51°
  36. 6 PM48°
  37. 7 PM46°
  38. 8 PM44°
  39. 9 PM42°
  40. 10 PM41°
  41. 11 PM40°
  42. 12 AM40°Sat
  43. 1 AM39°
  44. 2 AM38°
  45. 3 AM37°
  46. 4 AM37°
  47. 5 AM37°
  48. 6 AM37°

7-day forecast

Tap a day for details

  • Today10/29Low 32°High 56°

    Today: Sunny. High near 56, with temperatures falling to around 54 in the afternoon. East southeast wind 3 to 7 mph.

    Tonight: Mostly cloudy. Low around 32, with temperatures rising to around 34 overnight. North wind 1 to 5 mph.

    Sunny
  • Fri10/30Low 35°High 52°

    Friday: Patchy fog before 9am. Partly sunny, with a high near 52. North wind 1 to 5 mph.

    Friday Night: Mostly cloudy. Low around 35, with temperatures rising to around 37 overnight. South southwest wind around 3 mph.

    Patchy Fog then Partly Sunny
  • Sat10/31Low 38°High 60°

    Saturday: Mostly sunny. High near 60, with temperatures falling to around 56 in the afternoon. Southeast wind 1 to 5 mph.

    Saturday Night: Mostly cloudy. Low around 38, with temperatures rising to around 40 overnight. South wind around 2 mph.

    Mostly Sunny
  • Sun11/187% chance of precipitationLow 37°High 57°

    Sunday: Rain showers after 11am. Mostly cloudy. High near 57, with temperatures falling to around 51 in the afternoon. West northwest wind 1 to 6 mph. Chance of precipitation is 80%.

    Sunday Night: Rain showers. Cloudy. Low around 37, with temperatures rising to around 39 overnight. West northwest wind 5 to 17 mph. Chance of precipitation is 90%.

    Rain Showers
  • Mon11/266% chance of precipitationLow 34°High 51°

    Monday: Rain showers likely. Partly sunny. High near 51, with temperatures falling to around 47 in the afternoon. West northwest wind 3 to 17 mph. Chance of precipitation is 70%.

    Monday Night: A slight chance of rain showers before 11pm. Partly cloudy, with a low around 34. West southwest wind 3 to 7 mph. Chance of precipitation is 20%.

    Rain Showers Likely
  • Tue11/3Low 35°High 59°

    Tuesday: Mostly sunny. High near 59, with temperatures falling to around 52 in the afternoon. Southwest wind 5 to 8 mph.

    Tuesday Night: Partly cloudy, with a low around 35. Southwest wind 2 to 7 mph.

    Mostly Sunny
  • Wed11/4Low 33°High 56°

    Wednesday: Mostly sunny. High near 56, with temperatures falling to around 50 in the afternoon. North northwest wind around 5 mph.

    Wednesday Night: Partly cloudy. Low around 33, with temperatures rising to around 35 overnight. Southwest wind around 3 mph.

    Mostly Sunny

Forecast for 45.313, -107.926 from the NWS BYZ office, updated 10/29/2026, 4:53 AM PT · Official forecast on weather.gov

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now32°Sunny0%5 mph
  2. 8 AM32°Sunny0%3 mph
  3. 9 AM34°Sunny0%3 mph
  4. 10 AM42°Sunny0%3 mph
  5. 11 AM46°Sunny0%3 mph
  6. 12 PM51°Sunny0%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Fort Smith, MT right now?
The latest observation from FORT SMITH AIR STRIP was 28°F, reported at 10/29/2026, 7:00 AM MDT.
What is the high temperature today in Fort Smith, MT?
The National Weather Service forecast for today calls for a high near 56°F. Sunny.
Will it rain in Fort Smith, MT in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What time is sunrise and sunset in Fort Smith, MT today?
Sunrise is about 7:47 AM MDT and sunset is about 6:03 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Fort Smith, MT?
At Yellowtail Dam, the 1991 to 2020 normal high in October is 61°F and the normal low is 38°F.

Nearby hazards

Montana hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: Randall Fire (100 acres), Border Fire (100 acres)

Drought

By county

Big Horn County, week of 10/20/2026

89% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
7:47 AM
Sunset
6:03 PM
Daylight
10 hr 16 min
Moon
Waning Gibbous 87% lit
First light (civil dawn)
7:16 AM
Last light (civil dusk)
6:34 PM
Moonrise
8:19 PM
Moonset
12:19 PM

Normal October weather

Climate

Normal October high 61°, low 38°, precipitation 1.98 in for the month. 1991 to 2020 normals at Yellowtail Dam, 1 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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