Butte, MT Weather

Silver Bow County8:27 AM MDT46.00°N, 112.53°WElevation 5,538 ft

Current conditions

Mostly Sunny
36°
Mostly Sunny
Feels like 36°
High 64°·Low 35°
WindCalm
Humidity74%
Dew point29°
Visibility10 mi
Cloud cover26%
UV index0 Low
Sunrise7:54 AM
Sunset6:37 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day
  • Today

    Mostly sunny, with a high near 64. Southeast wind 0 to 5 mph.

  • Tonight

    Partly cloudy, with a low around 35. Southeast wind around 5 mph.

  • Wednesday

    Mostly sunny, with a high near 64. South southeast wind 1 to 7 mph.

National Weather Service forecast updated 6 hrs ago.

  1. Now Mostly Sunny 36°
  2. 9 AM Sunny 38°
  3. 10 AM Sunny 44°
  4. 11 AM Sunny 50°
  5. 12 PM Mostly Sunny 55°
  6. 1 PM Mostly Sunny 59°
  7. 2 PM Mostly Sunny 62°
  8. 3 PM Mostly Sunny 63°
  9. 4 PM Mostly Sunny 64°
  10. 5 PM Mostly Sunny 62°
  11. 6 PM Partly Cloudy 60°
  12. 7 PM Partly Cloudy 57°
  13. 8 PM Partly Cloudy 50°
  14. 9 PM Mostly Clear 47°
  15. 10 PM Mostly Clear 44°
  16. 11 PM Mostly Clear 42°
  17. Wed12 AM Mostly Clear 41°
  18. 1 AM Mostly Clear 41°
  19. 2 AM Mostly Clear 40°
  20. 3 AM Mostly Clear 39°
  21. 4 AM Partly Cloudy 37°
  22. 5 AM Partly Cloudy 37°
  23. 6 AM Mostly Sunny 37°
  24. 7 AM Mostly Sunny 36°

10-day forecast

Details
  1. TodayOct 20 Mostly Sunny Mostly Sunny35°64°
  2. WedOct 21 Mostly Sunny Mostly Sunny38°64°
  3. ThuOct 22 Mostly Sunny Mostly Sunny79%38°64°
  4. FriOct 23 Showers And Thunderstorms then Rain And Snow Likely Showers And Thunderstorms then Rain And Snow Likely92%26°45°
  5. SatOct 24 Mostly Sunny Mostly Sunny27°45°
  6. SunOct 25 Slight Chance Light Snow Slight Chance Light Snow21%28°48°
  7. MonOct 26 Slight Chance Light Snow then Mostly Sunny Slight Chance Light Snow then Mostly Sunny20%28°49°
  8. TueOct 27 Sunny Sunny28°52°
  9. WedOct 28 Cloudy Cloudy29°53°
  10. ThuOct 29 Cloudy Cloudy28°43°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Butte

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Air quality

29
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Helena, MT reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:54 AM
Sunset 6:37 PM
Daylight 10 h 42 min (−3 min 6 s tomorrow)
Waxing Gibbous · 69% lit
Moonrise 4:12 PM Moonset 1:36 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low52° / 25°
Record high77° (1927)
Record low10° (1943)
Wettest0.40 in (1899)
Yesterday67° / 27°
Month to date1.16 in (normal 0.54 in)

Butte Bert Mooney Ap, records since 1894. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in MSO, issued 5 hrs ago

Discussion

KEY MESSAGES:

- Mild day-time temperatures through Thursday.

- Patchy valley fog around sunrise each morning.

- Significant change coming Friday into the weekend.

A broad ridge of high pressure will continue to bring mild day- time temperatures across the Northern Rockies through Thursday. Stable conditions under the ridge are promoting the development of valley inversions and cold air pools, with observations the last few days suggesting high temperatures are struggling to reach their full warming potential. High cloud cover this morning into the early afternoon will limit solar heating, with temperatures feeling sluggish to warm until inversions weaken by mid-late afternoon. High clouds will generally decrease late afternoon as well, with plenty of sunshine for those looking to get outdoors.

Model guidance continues to advertise a significant change, as a trough and surface cold front tracks across the region Thursday night into Friday. The front will bring wind gusts of around 20 mph in Idaho and 20-35 mph across most of western Montana on Friday. Atmospheric moisture with this system will move northward the Great Basin, with precipitation focusing along and south of the I-90 corridor and along the Continental Divide in northwest Montana. The majority of the precipitation will fall within the warm sector of the trough, ahead of the approaching cold front, limiting the potential for winter weather impacts. Snow levels will fall to around 5,000 ft Friday and lower over the weekend as shower activity begins to decrease. Therefore, forecast snow amounts across the region are generally less than an inch, and mostly above 5,000 ft. The exception of course is the higher elevations of Flathead National Forest and Glacier National Park, which will likely pick up several inches of snow this weekend.

Aviation

Stable conditions will continue today under a ridge of high pressure. Valley inversions and cold air pools will set the stage for areas of valley fog, particularly near large bodies of water and river systems. The primary period to watch will be from 20/1200-1500Z, including Terminal KMSO. Fog can not be ruled out at KGPI as well, but the probability of impacts is less than 10 percent as high cloud cover has reduced overnight cooling.

Mso Watches

MT...None. ID...None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.