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Forsyth, MT Weather

It is 47°F in Forsyth, MT, observed at 5:45 PM MDT. Tonight: Mostly Cloudy then Patchy Fog, low 32°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Forsyth, MT current weather

47°F

Partly Cloudy

H -- / L 32°Feels like 47°

  • No rain expected in the next 12 hours

Observed at Sweeney Creek I-94 MP 112.6 (17.8 mi away), 10/29/2026, 5:45 PM MDT

Hourly forecast

NWS, updated 10/29/2026, 11:32 AM PT

  1. Now46°
  2. 7 PM44°
  3. 8 PM40°
  4. 9 PM39°
  5. 10 PM38°
  6. 11 PM37°
  7. 12 AM36°Fri
  8. 1 AM35°
  9. 2 AM34°
  10. 3 AM34°
  11. 4 AM34°
  12. 5 AM34°
  13. 6 AM33°
  14. 7 AM32°
  15. 8 AM33°
  16. 9 AM34°
  17. 10 AM39°
  18. 11 AM44°
  19. 12 PM48°
  20. 1 PM51°
  21. 2 PM53°
  22. 3 PM55°
  23. 4 PM54°
  24. 5 PM53°
  25. 6 PM50°
  26. 7 PM46°
  27. 8 PM44°
  28. 9 PM42°
  29. 10 PM41°
  30. 11 PM41°
  31. 12 AM41°Sat
  32. 1 AM40°
  33. 2 AM39°
  34. 3 AM38°
  35. 4 AM37°
  36. 5 AM37°
  37. 6 AM36°10%
  38. 7 AM37°10%
  39. 8 AM37°10%
  40. 9 AM39°10%
  41. 10 AM43°10%
  42. 11 AM47°10%
  43. 12 PM51°10%
  44. 1 PM53°10%
  45. 2 PM54°10%
  46. 3 PM55°10%
  47. 4 PM54°10%
  48. 5 PM52°10%

7-day forecast

Tap a day for details

  • Today10/29Low 32°High

    Tonight: Patchy fog after midnight. Mostly cloudy. Low around 32, with temperatures rising to around 34 overnight. East northeast wind around 6 mph.

    Mostly Cloudy then Patchy Fog
  • Fri10/30Low 35°High 55°

    Friday: Patchy fog before 9am. Partly sunny. High near 55, with temperatures falling to around 53 in the afternoon. East wind 5 to 8 mph.

    Friday Night: Patchy fog after 9pm. Mostly cloudy. Low around 35, with temperatures rising to around 37 overnight. Northeast wind around 2 mph.

    Patchy Fog then Partly Sunny
  • Sat10/3110% chance of precipitationLow 36°High 55°

    Saturday: Patchy fog before noon. Mostly cloudy. High near 55, with temperatures falling to around 52 in the afternoon. West northwest wind 2 to 6 mph.

    Saturday Night: Mostly cloudy, with a low around 36. North northwest wind around 1 mph.

    Patchy Fog then Mostly Cloudy
  • Sun11/173% chance of precipitationLow 40°High 58°

    Sunday: A chance of rain showers after 5pm. Mostly cloudy. High near 58, with temperatures falling to around 54 in the afternoon. East northeast wind 1 to 7 mph. Chance of precipitation is 50%.

    Sunday Night: Rain showers likely. Cloudy. Low around 40, with temperatures rising to around 42 overnight. North wind 6 to 14 mph. Chance of precipitation is 70%.

    Mostly Cloudy then Chance Rain Showers
  • Mon11/268% chance of precipitationLow 33°High 53°

    Monday: Rain showers likely. Mostly cloudy. High near 53, with temperatures falling to around 46 in the afternoon. Northwest wind 13 to 17 mph. Chance of precipitation is 70%.

    Monday Night: A chance of rain showers before 5am. Mostly cloudy, with a low around 33. West northwest wind 3 to 13 mph. Chance of precipitation is 40%.

    Rain Showers Likely
  • Tue11/310% chance of precipitationLow 34°High 57°

    Tuesday: Mostly sunny. High near 57, with temperatures falling to around 50 in the afternoon. West northwest wind 3 to 9 mph.

    Tuesday Night: Mostly cloudy, with a low around 34. West northwest wind around 5 mph.

    Mostly Sunny
  • Wed11/4Low 29°High 53°

    Wednesday: Mostly sunny. High near 53, with temperatures falling to around 45 in the afternoon. Northwest wind around 5 mph.

    Wednesday Night: Partly cloudy, with a low around 29. East northeast wind around 3 mph.

    Mostly Sunny
  • Thu11/5Low High 56°

    Thursday: Mostly sunny. High near 56, with temperatures falling to around 49 in the afternoon. East southeast wind 1 to 5 mph.

    Mostly Sunny

Forecast for 46.266, -106.680 from the NWS BYZ office, updated 10/29/2026, 11:32 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. Now46°Partly Cloudy0%5 mph
  2. 7 PM44°Mostly Cloudy0%5 mph
  3. 8 PM40°Mostly Cloudy0%5 mph
  4. 9 PM39°Mostly Cloudy0%5 mph
  5. 10 PM38°Mostly Cloudy0%5 mph
  6. 11 PM37°Mostly Cloudy0%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 Forsyth, MT right now?
The latest observation from Sweeney Creek I-94 MP 112.6 was 47°F, reported at 10/29/2026, 5:45 PM MDT.
Will it rain in Forsyth, 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 Forsyth, MT today?
Sunrise is about 7:44 AM MDT and sunset is about 5:56 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Forsyth, MT?
At Forsyth, the 1991 to 2020 normal high in October is 60°F and the normal low is 34°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: None reported

Drought

By county

Rosebud County, week of 10/27/2026

38% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
7:44 AM
Sunset
5:56 PM
Daylight
10 hr 13 min
Moon
Waning Gibbous 84% lit
First light (civil dawn)
7:12 AM
Last light (civil dusk)
6:27 PM
Moonrise
8:09 PM
Moonset
12:19 PM

Normal October weather

Climate

Normal October high 60°, low 34°, precipitation 1.37 in for the month. 1991 to 2020 normals at Forsyth, 0 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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