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Old Agency, MT Weather

It is 39°F in Old Agency, MT, observed at 7:31 PM MDT. Tonight: Slight Chance Light Rain then Patchy Fog, low 30°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Old Agency, MT current weather

39°F

Slight Chance Light Rain

H -- / L 30°Feels like 39°

  • No rain expected in the next 12 hours

Observed at RONAN (17.4 mi away), 10/30/2026, 7:31 PM MDT

Hourly forecast

NWS, updated 10/30/2026, 1:01 PM PT

  1. Now44°21%
  2. 9 PM43°13%
  3. 10 PM41°13%
  4. 11 PM40°
  5. 12 AM39°Sat
  6. 1 AM38°
  7. 2 AM36°
  8. 3 AM35°
  9. 4 AM34°
  10. 5 AM32°
  11. 6 AM32°
  12. 7 AM31°
  13. 8 AM31°
  14. 9 AM32°
  15. 10 AM36°
  16. 11 AM40°
  17. 12 PM44°
  18. 1 PM49°
  19. 2 PM53°
  20. 3 PM53°
  21. 4 PM53°
  22. 5 PM54°
  23. 6 PM50°
  24. 7 PM49°
  25. 8 PM47°
  26. 9 PM42°
  27. 10 PM41°
  28. 11 PM40°
  29. 12 AM38°Sun
  30. 1 AM37°
  31. 1 AM36°
  32. 2 AM35°
  33. 3 AM34°
  34. 4 AM33°25%
  35. 5 AM33°50%
  36. 6 AM31°50%
  37. 7 AM32°50%
  38. 8 AM33°50%
  39. 9 AM36°50%
  40. 10 AM39°50%
  41. 11 AM42°71%
  42. 12 PM45°71%
  43. 1 PM47°71%
  44. 2 PM48°71%
  45. 3 PM48°71%
  46. 4 PM47°71%
  47. 5 PM45°31%
  48. 6 PM44°31%

7-day forecast

Tap a day for details

  • Today10/3021% chance of precipitationLow 30°High

    Tonight: A slight chance of rain before 9pm, then patchy fog. Mostly cloudy, with a low around 30. North northeast wind around 1 mph. Chance of precipitation is 20%.

    Slight Chance Light Rain then Patchy Fog
  • Sat10/3150% chance of precipitationLow 30°High 55°

    Saturday: Patchy fog before noon. Partly sunny, with a high near 55. North wind 0 to 3 mph.

    Saturday Night: Patchy fog between midnight and 4am, then a chance of rain and patchy fog. Mostly cloudy, with a low around 30. North northwest wind around 2 mph. Chance of precipitation is 50%.

    Patchy Fog then Partly Sunny
  • Sun11/171% chance of precipitationLow 28°High 49°

    Sunday: Rain likely and patchy fog. Cloudy, with a high near 49. Northwest wind 0 to 3 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

    Sunday Night: A chance of rain before 11pm. Mostly cloudy, with a low around 28. Southwest wind around 3 mph. Chance of precipitation is 30%.

    Light Rain Likely
  • Mon11/2Low 25°High 52°

    Monday: Mostly sunny, with a high near 52.

    Monday Night: Partly cloudy, with a low around 25.

    Mostly Sunny
  • Tue11/3Low 28°High 53°

    Tuesday: Partly sunny, with a high near 53.

    Tuesday Night: Mostly cloudy, with a low around 28.

    Partly Sunny
  • Wed11/4Low 27°High 54°

    Wednesday: Mostly sunny, with a high near 54.

    Wednesday Night: Partly cloudy, with a low around 27.

    Mostly Sunny
  • Thu11/513% chance of precipitationLow 29°High 55°

    Thursday: Mostly sunny, with a high near 55.

    Thursday Night: Mostly cloudy, with a low around 29.

    Mostly Sunny
  • Fri11/629% chance of precipitationLow High 55°

    Friday: A chance of rain after 11am. Partly sunny, with a high near 55.

    Chance Light Rain

Forecast for 47.324, -114.298 from the NWS MSO office, updated 10/30/2026, 1:01 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. Now44°Slight Chance Light Rain21%1 mph
  2. 9 PM43°Cloudy13%1 mph
  3. 10 PM41°Cloudy13%0 mph
  4. 11 PM40°Mostly Cloudy9%1 mph
  5. 12 AM39°Mostly Cloudy3%1 mph
  6. 1 AM38°Patchy Fog2%0 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 Old Agency, MT right now?
The latest observation from RONAN was 39°F, reported at 10/30/2026, 7:31 PM MDT.
Will it rain in Old Agency, 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 Old Agency, MT today?
Sunrise is about 8:18 AM MDT and sunset is about 6:23 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Old Agency, MT?
At Saint Ignatius, the 1991 to 2020 normal high in October is 59°F and the normal low is 35°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.05 in
Snow
0.00 in
Ice
--

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: Bras Fire (1,688 acres)

Drought

By county

Sanders County, week of 10/27/2026

91% of the county is abnormally dry. No drought.

Sun and moon

Local time, center of the area

Sunrise
8:18 AM
Sunset
6:23 PM
Daylight
10 hr 5 min
Moon
Waning Gibbous 75% lit
First light (civil dawn)
7:46 AM
Last light (civil dusk)
6:55 PM
Moonrise
9:49 PM
Moonset
1:57 PM

Normal October weather

Climate

Normal October high 59°, low 35°, precipitation 1.28 in for the month. 1991 to 2020 normals at Saint Ignatius, 9 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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