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Unionville, MT Weather

It is 36°F and cloudy in Unionville, MT, observed at 5:15 AM MDT. Today: Slight Chance Freezing Drizzle then Partly Sunny, high 44°F, low 36°F. Hourly and 10-day forecast from the National Weather Service. Times are local (MDT).

Unionville, MT current weather

36°F

Cloudy

H 44° / L 36°Feels like 36°

  • No rain expected in the next 12 hours

Observed at Helena Regional Airport (6 mi away), 10/31/2026, 5:15 AM MDT

Hourly forecast

NWS, updated 10/31/2026, 3:46 AM PT

  1. Now33°16%
  2. 7 AM34°12%
  3. 8 AM34°
  4. 9 AM35°
  5. 10 AM38°
  6. 11 AM39°
  7. 12 PM40°
  8. 1 PM42°
  9. 2 PM42°
  10. 3 PM43°10%
  11. 4 PM44°13%
  12. 5 PM42°14%
  13. 6 PM41°11%
  14. 7 PM41°
  15. 8 PM39°17%
  16. 9 PM39°11%
  17. 10 PM39°
  18. 11 PM39°
  19. 12 AM39°Sun
  20. 1 AM38°
  21. 1 AM38°
  22. 2 AM38°
  23. 3 AM37°
  24. 4 AM37°
  25. 5 AM38°14%
  26. 6 AM36°27%
  27. 7 AM37°42%
  28. 8 AM39°53%
  29. 9 AM39°55%
  30. 10 AM38°46%
  31. 11 AM37°
  32. 12 PM38°52%
  33. 1 PM37°54%
  34. 2 PM38°80%
  35. 3 PM37°79%
  36. 4 PM37°81%
  37. 5 PM37°94%
  38. 6 PM36°94%
  39. 7 PM36°94%
  40. 8 PM37°94%
  41. 9 PM37°94%
  42. 10 PM38°94%
  43. 11 PM38°62%
  44. 12 AM38°62%Mon
  45. 1 AM38°62%
  46. 2 AM38°62%
  47. 3 AM37°62%
  48. 4 AM37°62%

10-day forecast

Tap a day for details

  • Today10/3117% chance of precipitationLow 36°High 44°

    Today: A slight chance of freezing drizzle and a slight chance of drizzle before 7am. Partly sunny, with a high near 44. North wind 0 to 3 mph. Chance of precipitation is 20%.

    Tonight: A slight chance of rain between 8pm and 9pm. Mostly cloudy, with a low around 36. South wind 0 to 3 mph. Chance of precipitation is 20%.

    Slight Chance Freezing Drizzle then Partly Sunny
  • Sun11/194% chance of precipitationLow 35°High 39°

    Sunday: A chance of drizzle before 9am, then rain likely between 9am and 10am, then rain and patchy fog between 10am and 5pm, then rain and snow. Cloudy, with a high near 39. Northwest wind 0 to 6 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

    Sunday Night: Rain and snow before 8pm, then rain and snow between 8pm and 5am. Cloudy, with a low around 35. West northwest wind 5 to 8 mph. Chance of precipitation is 90%.

    Rain And Snow
  • Mon11/214% chance of precipitationLow 29°High 41°

    Monday: Mostly sunny, with a high near 41. West wind 2 to 6 mph.

    Monday Night: Mostly clear, with a low around 29. Southwest wind 2 to 8 mph.

    Mostly Sunny
  • Tue11/3Low 32°High 45°

    Tuesday: Partly sunny, with a high near 45. South wind 2 to 7 mph.

    Tuesday Night: Mostly cloudy, with a low around 32. Southwest wind 2 to 6 mph.

    Partly Sunny
  • Wed11/4Low 32°High 44°

    Wednesday: Mostly sunny, with a high near 44.

    Wednesday Night: Partly cloudy, with a low around 32.

    Mostly Sunny
  • Thu11/5Low 32°High 45°

    Thursday: Mostly sunny, with a high near 45.

    Thursday Night: Partly cloudy, with a low around 32.

    Mostly Sunny
  • Fri11/613% chance of precipitationLow 32°High 44°

    Friday: Mostly sunny, with a high near 44.

    Friday Night: Mostly cloudy, with a low around 32.

    Mostly Sunny
  • Sat11/7Model blendLow 32°High 54°

    Saturday: Partly cloudy. High near 54°. Low that night near 32°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sun11/8Model blendLow 34°High 55°

    Sunday: Partly cloudy. High near 55°. Low that night near 34°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Mon11/9Model blendLow 33°High 54°

    Monday: Partly cloudy. High near 54°. Low that night near 33°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 46.544, -112.081 from the NWS TFX office, updated 10/31/2026, 3:46 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KHLN (Helena Rgnl, 6 mi), model run 10/31/2026, 2:00 AM MDT

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. Now33°Slight Chance Freezing Drizzle16%1 mph
  2. 7 AM34°Mostly Cloudy12%1 mph
  3. 8 AM34°Mostly Cloudy9%1 mph
  4. 9 AM35°Partly Sunny5%2 mph
  5. 10 AM38°Partly Sunny6%0 mph
  6. 11 AM39°Partly Sunny6%1 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 Unionville, MT right now?
The latest observation from Helena Regional Airport was 36°F and cloudy, reported at 10/31/2026, 5:15 AM MDT.
What is the high temperature today in Unionville, MT?
The National Weather Service forecast for today calls for a high near 44°F. Slight Chance Freezing Drizzle then Partly Sunny.
Will it rain in Unionville, 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 is the 10-day forecast for Unionville, MT?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 7 to Nov 9) come from the NOAA National Blend of Models, with highs of 54°F to 55°F. Model guidance this far out often changes.
What time is sunrise and sunset in Unionville, MT today?
Sunrise is about 8:09 AM MDT and sunset is about 6:14 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Unionville, MT?
At Helena RGNL AP, the 1991 to 2020 normal high in October is 58°F and the normal low is 34°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.27 in
Snow
0.00 in
Ice
0.00 in

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

Lewis and Clark County, week of 10/27/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
8:09 AM
Sunset
6:14 PM
Daylight
10 hr 5 min
Moon
Waning Gibbous 71% lit
First light (civil dawn)
7:37 AM
Last light (civil dusk)
6:46 PM
Moonrise
11:05 PM
Moonset
2:28 PM

Normal October weather

Climate

Normal October high 58°, low 34°, precipitation 0.78 in for the month. 1991 to 2020 normals at Helena RGNL AP, 7 mi away.

Other places nearby

Data sources

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About this data

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