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St. Xavier, MT Weather

Today: Partly Sunny, high 49°F, low 32°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

St. Xavier, MT current weather

47°F

Partly Sunny

Forecast for this hour. No recent report from a nearby station.

H 49° / L 32°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/30/2026, 3:42 PM PT

Hourly forecast

NWS, updated 10/30/2026, 3:42 PM PT

  1. Now47°
  2. 6 PM44°
  3. 7 PM41°
  4. 8 PM37°
  5. 9 PM36°
  6. 10 PM35°
  7. 11 PM34°
  8. 12 AM34°Sat
  9. 1 AM33°
  10. 2 AM33°
  11. 3 AM32°11%
  12. 4 AM33°
  13. 5 AM33°
  14. 6 AM33°21%
  15. 7 AM33°21%
  16. 8 AM34°28%
  17. 9 AM37°30%
  18. 10 AM41°35%
  19. 11 AM44°33%
  20. 12 PM47°31%
  21. 1 PM50°15%
  22. 2 PM51°12%
  23. 3 PM52°13%
  24. 4 PM52°
  25. 5 PM51°
  26. 6 PM47°
  27. 7 PM45°
  28. 8 PM41°
  29. 9 PM40°
  30. 10 PM39°
  31. 11 PM39°
  32. 12 AM39°Sun
  33. 1 AM37°
  34. 1 AM37°
  35. 2 AM36°
  36. 3 AM35°
  37. 4 AM35°
  38. 5 AM35°
  39. 6 AM34°
  40. 7 AM35°
  41. 8 AM37°
  42. 9 AM41°
  43. 10 AM47°
  44. 11 AM51°
  45. 12 PM54°
  46. 1 PM55°
  47. 2 PM55°
  48. 3 PM54°

7-day forecast

Tap a day for details

  • Today10/3011% chance of precipitationLow 32°High 49°

    This Afternoon: Partly sunny. High near 49, with temperatures falling to around 47 in the afternoon. Northeast wind around 5 mph.

    Tonight: Areas of fog after 9pm. Mostly cloudy, with a low around 32. North northwest wind around 5 mph.

    Partly Sunny
  • Sat10/3135% chance of precipitationLow 33°High 52°

    Saturday: Areas of fog and a chance of rain showers before 2pm. Mostly cloudy, with a high near 52. Northwest wind around 3 mph. Chance of precipitation is 40%.

    Saturday Night: Patchy fog. Mostly cloudy. Low around 33, with temperatures rising to around 35 overnight. Southeast wind around 2 mph.

    Areas Of Fog
  • Sun11/195% chance of precipitationLow 38°High 56°

    Sunday: Patchy fog before 11am, then rain showers likely. Mostly cloudy. High near 56, with temperatures falling to around 50 in the afternoon. East northeast wind around 5 mph. Chance of precipitation is 70%.

    Sunday Night: Rain showers. Cloudy, with a low around 38. Northwest wind 5 to 20 mph. Chance of precipitation is 100%.

    Patchy Fog then Rain Showers Likely
  • Mon11/286% chance of precipitationLow 31°High 54°

    Monday: Rain showers before 5pm. Mostly cloudy. High near 54, with temperatures falling to around 48 in the afternoon. Northwest wind 5 to 18 mph. Chance of precipitation is 90%.

    Monday Night: Partly cloudy, with a low around 31. West southwest wind around 6 mph.

    Rain Showers
  • Tue11/3Low 33°High 61°

    Tuesday: Mostly sunny. High near 61, with temperatures falling to around 53 in the afternoon. Southwest wind 1 to 5 mph.

    Tuesday Night: Partly cloudy, with a low around 33. West southwest wind around 5 mph.

    Mostly Sunny
  • Wed11/4Low 31°High 57°

    Wednesday: Mostly sunny. High near 57, with temperatures falling to around 50 in the afternoon. West northwest wind around 5 mph.

    Wednesday Night: Partly cloudy, with a low around 31. Southeast wind around 3 mph.

    Mostly Sunny
  • Thu11/5Low 33°High 57°

    Thursday: Mostly sunny. High near 57, with temperatures falling to around 51 in the afternoon. West northwest wind around 3 mph.

    Thursday Night: Partly cloudy, with a low around 33. South southwest wind around 5 mph.

    Mostly Sunny

Forecast for 45.458, -107.723 from the NWS BYZ office, updated 10/30/2026, 3:42 PM 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. Now47°Partly Sunny0%5 mph
  2. 6 PM44°Mostly Cloudy0%5 mph
  3. 7 PM41°Mostly Cloudy0%3 mph
  4. 8 PM37°Mostly Cloudy0%3 mph
  5. 9 PM36°Patchy Fog0%3 mph
  6. 10 PM35°Patchy Fog3%3 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 high temperature today in St. Xavier, MT?
The National Weather Service forecast for this afternoon calls for a high near 49°F. Partly Sunny.
Will it rain in St. Xavier, 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 St. Xavier, MT today?
Sunrise is about 7:48 AM MDT and sunset is about 6:00 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in St. Xavier, 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), 1583 Fire (1 acre)

Drought

By county

Big Horn County, week of 10/27/2026

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

Sun and moon

Local time, center of the area

Sunrise
7:48 AM
Sunset
6 PM
Daylight
10 hr 13 min
Moon
Waning Gibbous 76% lit
First light (civil dawn)
7:17 AM
Last light (civil dusk)
6:31 PM
Moonrise
9:31 PM
Moonset
1:19 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, 15 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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