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Roundup, MT Weather

Today: Sunny, high 58°F, low 27°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Roundup, MT current weather

32°F

Sunny

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

H 58° / L 27°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/28/2026, 2:02 AM PT

Hourly forecast

NWS, updated 10/28/2026, 2:02 AM PT

  1. Now32°
  2. 8 AM33°
  3. 9 AM35°
  4. 10 AM42°
  5. 11 AM47°
  6. 12 PM52°
  7. 1 PM55°
  8. 2 PM56°
  9. 3 PM57°
  10. 4 PM58°
  11. 5 PM56°
  12. 6 PM53°
  13. 7 PM50°
  14. 8 PM45°
  15. 9 PM42°
  16. 10 PM40°
  17. 11 PM38°
  18. Thu12 AM35°
  19. 1 AM34°
  20. 2 AM32°
  21. 3 AM31°
  22. 4 AM30°
  23. 5 AM29°
  24. 6 AM28°
  25. 7 AM28°
  26. 8 AM27°
  27. 9 AM29°
  28. 10 AM36°
  29. 11 AM40°
  30. 12 PM44°
  31. 1 PM47°
  32. 2 PM49°
  33. 3 PM49°
  34. 4 PM50°
  35. 5 PM48°
  36. 6 PM45°
  37. 7 PM42°
  38. 8 PM38°
  39. 9 PM35°
  40. 10 PM33°
  41. 11 PM32°
  42. Fri12 AM31°
  43. 1 AM30°
  44. 2 AM29°
  45. 3 AM29°
  46. 4 AM28°
  47. 5 AM28°
  48. 6 AM28°

7-day forecast

Tap a day for details

  • Today10/28Low 27°High 58°

    Today: Sunny. High near 58, with temperatures falling to around 56 in the afternoon. West southwest wind 6 to 10 mph.

    Tonight: Mostly clear. Low around 27, with temperatures rising to around 29 overnight. Northwest wind 2 to 6 mph.

    Sunny
  • Thu10/29Low 27°High 51°

    Thursday: Sunny. High near 51, with temperatures falling to around 48 in the afternoon. West northwest wind 5 to 9 mph.

    Thursday Night: Mostly cloudy, with a low around 27. Northeast wind around 7 mph.

    Sunny
  • Fri10/30Low 29°High 49°

    Friday: Mostly cloudy. High near 49, with temperatures falling to around 47 in the afternoon. East northeast wind around 5 mph.

    Friday Night: Mostly cloudy, with a low around 29. West northwest wind 0 to 3 mph.

    Mostly Cloudy
  • Sat10/3132% chance of precipitationLow 32°High 56°

    Saturday: Partly sunny. High near 56, with temperatures falling to around 53 in the afternoon. West wind around 3 mph.

    Saturday Night: A chance of rain showers after midnight. Mostly cloudy, with a low around 32. North northeast wind 0 to 3 mph. Chance of precipitation is 30%.

    Partly Sunny
  • Sun11/159% chance of precipitationLow 32°High 52°

    Sunday: Rain showers likely. Mostly cloudy. High near 52, with temperatures falling to around 47 in the afternoon. North northwest wind 1 to 8 mph. Chance of precipitation is 60%.

    Sunday Night: Rain showers likely. Mostly cloudy, with a low around 32. Northwest wind around 8 mph. Chance of precipitation is 60%.

    Rain Showers Likely
  • Mon11/226% chance of precipitationLow 30°High 52°

    Monday: A chance of rain showers. Mostly sunny. High near 52, with temperatures falling to around 46 in the afternoon. West northwest wind 6 to 12 mph. Chance of precipitation is 30%.

    Monday Night: A slight chance of rain showers before 5am. Partly cloudy, with a low around 30. West wind 3 to 7 mph. Chance of precipitation is 20%.

    Chance Rain Showers
  • Tue11/312% chance of precipitationLow 30°High 55°

    Tuesday: Mostly sunny. High near 55, with temperatures falling to around 48 in the afternoon. West wind 6 to 9 mph.

    Tuesday Night: Partly cloudy, with a low around 30. West wind around 6 mph.

    Mostly Sunny

Forecast for 46.448, -108.540 from the NWS BYZ office, updated 10/28/2026, 2:02 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%9 mph
  2. 8 AM33°Sunny0%9 mph
  3. 9 AM35°Sunny0%9 mph
  4. 10 AM42°Sunny0%9 mph
  5. 11 AM47°Sunny0%10 mph
  6. 12 PM52°Sunny0%10 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow
25°43°60°0%100%WedThuFriSatSunMonTue58°32°50°27°48°28°55°29°51°33°50°33°54°30°

Line: temperature °F. Bars: chance of precipitation.

  1. WedNow32°0%9
  2.  8 AM33°0%9
  3.  9 AM35°0%9
  4.  10 AM42°0%9
  5.  11 AM47°0%10
  6.  12 PM52°0%10
  7.  1 PM55°0%10
  8.  2 PM56°0%10
  9.  3 PM57°0%9
  10.  4 PM58°0%8
  11.  5 PM56°0%6
  12.  6 PM53°0%5
  13.  7 PM50°0%5
  14.  8 PM45°1%5
  15.  9 PM42°1%5
  16.  10 PM40°0%3
  17.  11 PM38°0%2
  18. Thu 10/2912 AM35°0%2
  19.  1 AM34°0%2
  20.  2 AM32°0%3
  21.  3 AM31°0%5
  22.  4 AM30°0%5
  23.  5 AM29°0%6
  24.  6 AM28°0%6
  25.  7 AM28°0%6
  26.  8 AM27°0%6
  27.  9 AM29°0%5
  28.  10 AM36°0%5
  29.  11 AM40°0%6
  30.  12 PM44°0%6
  31.  1 PM47°0%6
  32.  2 PM49°0%6
  33.  3 PM49°0%9
  34.  4 PM50°0%9
  35.  5 PM48°0%9
  36.  6 PM45°0%7
  37.  7 PM42°0%7
  38.  8 PM38°0%7
  39.  9 PM35°0%6
  40.  10 PM33°0%6
  41.  11 PM32°0%6
  42. Fri 10/3012 AM31°0%5
  43.  1 AM30°0%5
  44.  2 AM29°0%5
  45.  3 AM29°0%5
  46.  4 AM28°0%5
  47.  5 AM28°0%5
  48.  6 AM28°0%5
  49.  7 AM28°0%5
  50.  8 AM28°0%5
  51.  9 AM30°0%3
  52.  10 AM33°0%3
  53.  11 AM36°0%3
  54.  12 PM40°0%3
  55.  1 PM43°0%3
  56.  2 PM46°0%3
  57.  3 PM48°0%3
  58.  4 PM48°0%3
  59.  5 PM47°0%3
  60.  6 PM45°1%1
  61.  7 PM43°1%1
  62.  8 PM40°1%1
  63.  9 PM37°1%0
  64.  10 PM35°1%0
  65.  11 PM34°1%0
  66. Sat 10/3112 AM33°2%1
  67.  1 AM32°2%1
  68.  2 AM31°2%1
  69.  3 AM31°2%3
  70.  4 AM30°2%3
  71.  5 AM29°2%3
  72.  6 AM29°1%2
  73.  7 AM29°1%2
  74.  8 AM30°1%2
  75.  9 AM32°1%2
  76.  10 AM37°1%2
  77.  11 AM44°1%2
  78.  12 PM49°1%2
  79.  1 PM53°1%2
  80.  2 PM55°1%2
  81.  3 PM55°1%3
  82.  4 PM55°1%3
  83.  5 PM53°1%3
  84.  6 PM50°13%3
  85.  7 PM46°13%3
  86.  8 PM43°13%3
  87.  9 PM40°13%0
  88.  10 PM38°13%0
  89.  11 PM37°13%0
  90. Sun 11/112 AM36°18%0
  91.  1 AM35°18%0
  92.  1 AM34°18%0
  93.  2 AM34°18%0
  94.  3 AM33°18%0
  95.  4 AM33°18%0
  96.  5 AM33°32%1
  97.  6 AM33°32%1
  98.  7 AM33°32%1
  99.  8 AM35°32%2
  100.  9 AM38°32%2
  101.  10 AM42°32%2
  102.  11 AM46°47%3
  103.  12 PM49°47%3
  104.  1 PM50°47%3
  105.  2 PM51°47%8
  106.  3 PM51°47%8
  107.  4 PM49°47%8
  108.  5 PM47°59%7
  109.  6 PM45°59%7
  110.  7 PM42°59%7
  111.  8 PM40°59%7
  112.  9 PM39°59%7
  113.  10 PM38°59%7
  114.  11 PM37°40%8
  115. Mon 11/212 AM36°40%8
  116.  1 AM35°40%8
  117.  2 AM34°40%8
  118.  3 AM33°40%8
  119.  4 AM33°40%8
  120.  5 AM33°26%8
  121.  6 AM33°26%8
  122.  7 AM33°26%8
  123.  8 AM34°26%10
  124.  9 AM38°26%10
  125.  10 AM42°26%10
  126.  11 AM46°18%12
  127.  12 PM48°18%12
  128.  1 PM50°18%12
  129.  2 PM50°18%9
  130.  3 PM50°18%9
  131.  4 PM48°18%9
  132.  5 PM46°17%6
  133.  6 PM43°17%6
  134.  7 PM40°17%6
  135.  8 PM37°17%3
  136.  9 PM35°17%3
  137.  10 PM34°17%3
  138.  11 PM33°15%5
  139. Tue 11/312 AM32°15%5
  140.  1 AM31°15%5
  141.  2 AM31°15%6
  142.  3 AM30°15%6
  143.  4 AM30°15%6
  144.  5 AM30°12%7
  145.  6 AM30°12%7
  146.  7 AM31°12%7
  147.  8 AM33°12%7
  148.  9 AM38°12%7
  149.  10 AM43°12%7
  150.  11 AM48°6%9
  151.  12 PM51°6%9
  152.  1 PM53°6%9
  153.  2 PM54°6%7
  154.  3 PM53°6%7
  155.  4 PM51°6%7
  156.  5 PM48°6%6

Temperature °F · chance of precipitation · wind in mph

NWS hourly forecast updated 10/28/2026, 2:02 AM PT

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

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

Musselshell County, week of 10/20/2026

3% of the county is abnormally dry. No drought.

Sun and moon

Local time, center of the area

Sunrise
7:50 AM
Sunset
6:05 PM
Daylight
10 hr 15 min
Moon
Waning Gibbous 94% lit
First light (civil dawn)
7:19 AM
Last light (civil dusk)
6:36 PM
Moonrise
7:15 PM
Moonset
11:16 AM

Normal October weather

Climate

Normal October high 61°, low 32°, precipitation 1.22 in for the month. 1991 to 2020 normals at Roundup, 1 mi away.

Other places nearby

Data sources

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Frequently asked questions

What is the high temperature today in Roundup, MT?
The National Weather Service forecast for today calls for a high near 58°F. Sunny.
Will it rain in Roundup, 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 Roundup, MT today?
Sunrise is about 7:50 AM MDT and sunset is about 6:05 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Roundup, MT?
At Roundup, the 1991 to 2020 normal high in October is 61°F and the normal low is 32°F.

About this data

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